no-build bus alternative...

1260
Green Line Extension Project Draft Environmental Impact Report/Environmental Assessment and Draft Section 4(f) Evaluation No-Build Bus Alternative Analysis

Upload: hoangbao

Post on 19-Jul-2018

221 views

Category:

Documents


0 download

TRANSCRIPT

  • Green Line Extension Project Draft Environmental Impact Report/Environmental Assessment and Draft Section 4(f) Evaluation

    No-Build Bus Alternative Analysis

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak37: Cambridge St & Prospect St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width (ft) 12 12 12 12 12 12 14 14 14 14 14 14Total Lost Time (s) 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0Turning Speed (mph) 15 9 15 9 15 9 15 9Right Turn on Red No No No NoLink Speed (mph) 30 30 30 30Link Distance (ft) 1570 1170 385 1421Travel Time (s) 35.7 26.6 8.8 32.3Volume (vph) 53 306 11 81 354 14 32 265 78 30 337 47Confl. Peds. (#/hr) 34 19 19 34 45 32 32 45Peak Hour Factor 0.94 0.94 0.94 0.95 0.95 0.95 0.82 0.82 0.82 0.88 0.88 0.88Heavy Vehicles (%) 2% 2% 2% 4% 4% 4% 5% 5% 5% 3% 3% 3%Lane Group Flow (vph) 0 394 0 0 473 0 0 457 0 0 470 0Turn Type Perm Perm Perm PermProtected Phases 6 6 1 1Permitted Phases 6 6 1 1Minimum Split (s) 42.0 42.0 42.0 42.0 48.0 48.0 48.0 48.0Total Split (s) 42.0 42.0 0.0 42.0 42.0 0.0 48.0 48.0 0.0 48.0 48.0 0.0Total Split (%) 46.7% 46.7% 0.0% 46.7% 46.7% 0.0% 53.3% 53.3% 0.0% 53.3% 53.3% 0.0%Maximum Green (s) 34.0 34.0 34.0 34.0 40.0 40.0 40.0 40.0Yellow Time (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0All-Red Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0Lead/LagLead-Lag Optimize?Walk Time (s) 27.0 27.0 27.0 27.0 30.0 30.0 30.0 30.0Flash Dont Walk (s) 7.0 7.0 7.0 7.0 10.0 10.0 10.0 10.0Pedestrian Calls (#/hr) 0 0 0 0 0 0 0 0v/c Ratio 0.66 0.86 0.60 0.59Control Delay 29.8 43.0 14.6 22.5Queue Delay 0.0 0.0 0.0 0.0Total Delay 29.8 43.0 14.6 22.5Queue Length 50th (ft) 183 243 84 194Queue Length 95th (ft) 287 #422 m129 283Internal Link Dist (ft) 1490 1090 305 1341Turn Bay Length (ft)Base Capacity (vph) 593 552 763 803Starvation Cap Reductn 0 0 0 0Spillback Cap Reductn 0 0 0 0Storage Cap Reductn 0 0 0 0Reduced v/c Ratio 0.66 0.86 0.60 0.59

    Intersection SummaryArea Type: OtherCycle Length: 90Actuated Cycle Length: 90Offset: 54 (60%), Referenced to phase 6:EBWB, Start of GreenNatural Cycle: 90Control Type: Pretimed# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.m Volume for 95th percentile queue is metered by upstream signal.

    Splits and Phases: 37: Cambridge St & Prospect St

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak37: Cambridge St & Prospect St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width 12 12 12 12 12 12 14 14 14 14 14 14Total Lost time (s) 8.0 8.0 8.0 8.0Lane Util. Factor 1.00 1.00 1.00 1.00Frpb, ped/bikes 1.00 1.00 0.99 0.99Flpb, ped/bikes 1.00 1.00 1.00 1.00Frt 1.00 1.00 0.97 0.98Flt Protected 0.99 0.99 1.00 1.00Satd. Flow (prot) 1834 1795 1843 1913Flt Permitted 0.85 0.81 0.93 0.94Satd. Flow (perm) 1570 1461 1716 1806Volume (vph) 53 306 11 81 354 14 32 265 78 30 337 47Peak-hour factor, PHF 0.94 0.94 0.94 0.95 0.95 0.95 0.82 0.82 0.82 0.88 0.88 0.88Adj. Flow (vph) 56 326 12 85 373 15 39 323 95 34 383 53RTOR Reduction (vph) 0 0 0 0 0 0 0 0 0 0 0 0Lane Group Flow (vph) 0 394 0 0 473 0 0 457 0 0 470 0Confl. Peds. (#/hr) 34 19 19 34 45 32 32 45Heavy Vehicles (%) 2% 2% 2% 4% 4% 4% 5% 5% 5% 3% 3% 3%Turn Type Perm Perm Perm PermProtected Phases 6 6 1 1Permitted Phases 6 6 1 1Actuated Green, G (s) 34.0 34.0 40.0 40.0Effective Green, g (s) 34.0 34.0 40.0 40.0Actuated g/C Ratio 0.38 0.38 0.44 0.44Clearance Time (s) 8.0 8.0 8.0 8.0Lane Grp Cap (vph) 593 552 763 803v/s Ratio Protv/s Ratio Perm 0.25 c0.32 c0.27 0.26v/c Ratio 0.66 0.86 0.60 0.59Uniform Delay, d1 23.3 25.8 18.9 18.8Progression Factor 1.00 1.00 0.59 1.00Incremental Delay, d2 5.8 15.7 2.9 3.1Delay (s) 29.0 41.5 14.2 21.9Level of Service C D B CApproach Delay (s) 29.0 41.5 14.2 21.9Approach LOS C D B C

    Intersection SummaryHCM Average Control Delay 26.7 HCM Level of Service CHCM Volume to Capacity ratio 0.72Actuated Cycle Length (s) 90.0 Sum of lost time (s) 16.0Intersection Capacity Utilization 81.4% ICU Level of Service DAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak38: Prospect St & Beacon St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Total Lost Time (s) 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0Turning Speed (mph) 15 9 15 9 15 9 15 9Right Turn on Red No No No NoLink Speed (mph) 30 30 30 30Link Distance (ft) 942 122 3010 1027Travel Time (s) 21.4 2.8 68.4 23.3Volume (vph) 102 331 30 25 392 12 21 507 88 42 280 23Confl. Peds. (#/hr) 14 18 18 14 26 19 19 26Peak Hour Factor 0.85 0.85 0.85 0.91 0.91 0.91 0.94 0.94 0.94 0.87 0.87 0.87Heavy Vehicles (%) 5% 5% 5% 3% 3% 3% 2% 2% 2% 4% 4% 4%Lane Group Flow (vph) 0 544 0 0 471 0 0 655 0 0 396 0Turn Type Perm Perm Perm PermProtected Phases 6 6 1 1Permitted Phases 6 6 1 1Minimum Split (s) 47.0 47.0 47.0 47.0 43.0 43.0 43.0 43.0Total Split (s) 47.0 47.0 0.0 47.0 47.0 0.0 43.0 43.0 0.0 43.0 43.0 0.0Total Split (%) 52.2% 52.2% 0.0% 52.2% 52.2% 0.0% 47.8% 47.8% 0.0% 47.8% 47.8% 0.0%Maximum Green (s) 39.0 39.0 39.0 39.0 35.0 35.0 35.0 35.0Yellow Time (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0All-Red Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0Lead/LagLead-Lag Optimize?Walk Time (s) 33.0 33.0 33.0 33.0 26.0 26.0 26.0 26.0Flash Dont Walk (s) 6.0 6.0 6.0 6.0 9.0 9.0 9.0 9.0Pedestrian Calls (#/hr) 0 0 0 0 0 0 0 0v/c Ratio 0.54 0.63 0.95 0.70Control Delay 21.3 11.5 52.2 31.3Queue Delay 0.0 0.1 0.0 0.0Total Delay 21.3 11.6 52.2 31.3Queue Length 50th (ft) 116 69 354 186Queue Length 95th (ft) 153 m90 #579 280Internal Link Dist (ft) 862 42 2930 947Turn Bay Length (ft)Base Capacity (vph) 1015 752 690 563Starvation Cap Reductn 0 12 0 0Spillback Cap Reductn 0 0 0 0Storage Cap Reductn 0 0 0 0Reduced v/c Ratio 0.54 0.64 0.95 0.70

    Intersection SummaryArea Type: OtherCycle Length: 90Actuated Cycle Length: 90Offset: 62 (69%), Referenced to phase 1:NWSE, Start of GreenNatural Cycle: 90Control Type: Pretimed# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.m Volume for 95th percentile queue is metered by upstream signal.

    Splits and Phases: 38: Prospect St & Beacon St

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak38: Prospect St & Beacon St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Total Lost time (s) 8.0 8.0 8.0 8.0Lane Util. Factor 0.95 1.00 1.00 1.00Frpb, ped/bikes 1.00 1.00 0.99 1.00Flpb, ped/bikes 1.00 1.00 1.00 1.00Frt 0.99 1.00 0.98 0.99Flt Protected 0.99 1.00 1.00 0.99Satd. Flow (prot) 3354 1830 1811 1794Flt Permitted 0.69 0.95 0.98 0.80Satd. Flow (perm) 2343 1736 1772 1447Volume (vph) 102 331 30 25 392 12 21 507 88 42 280 23Peak-hour factor, PHF 0.85 0.85 0.85 0.91 0.91 0.91 0.94 0.94 0.94 0.87 0.87 0.87Adj. Flow (vph) 120 389 35 27 431 13 22 539 94 48 322 26RTOR Reduction (vph) 0 0 0 0 0 0 0 0 0 0 0 0Lane Group Flow (vph) 0 544 0 0 471 0 0 655 0 0 396 0Confl. Peds. (#/hr) 14 18 18 14 26 19 19 26Heavy Vehicles (%) 5% 5% 5% 3% 3% 3% 2% 2% 2% 4% 4% 4%Turn Type Perm Perm Perm PermProtected Phases 6 6 1 1Permitted Phases 6 6 1 1Actuated Green, G (s) 39.0 39.0 35.0 35.0Effective Green, g (s) 39.0 39.0 35.0 35.0Actuated g/C Ratio 0.43 0.43 0.39 0.39Clearance Time (s) 8.0 8.0 8.0 8.0Lane Grp Cap (vph) 1015 752 689 563v/s Ratio Protv/s Ratio Perm 0.23 c0.27 c0.37 0.27v/c Ratio 0.54 0.63 0.95 0.70Uniform Delay, d1 18.8 19.8 26.7 23.1Progression Factor 1.00 0.41 1.00 1.00Incremental Delay, d2 2.0 3.0 24.1 7.2Delay (s) 20.8 11.2 50.8 30.3Level of Service C B D CApproach Delay (s) 20.8 11.2 50.8 30.3Approach LOS C B D C

    Intersection SummaryHCM Average Control Delay 30.0 HCM Level of Service CHCM Volume to Capacity ratio 0.78Actuated Cycle Length (s) 90.0 Sum of lost time (s) 16.0Intersection Capacity Utilization 95.7% ICU Level of Service FAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak2: Mystic Valley Pkwy & Auburn St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group NBT NBR SBL SBT NWL NWR 2 4Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900Lane Width (ft) 12 12 10 10 14 14Total Lost Time (s) 4.0 4.0 4.0 4.0 4.0 4.0Leading Detector (ft) 50 50 50 50Trailing Detector (ft) 0 0 0 0Turning Speed (mph) 9 15 15 9Right Turn on Red Yes YesLink Speed (mph) 30 30 30Link Distance (ft) 873 104 899Travel Time (s) 19.8 2.4 20.4Volume (vph) 820 19 105 1196 107 63Peak Hour Factor 0.89 0.89 0.90 0.90 0.82 0.82Heavy Vehicles (%) 0% 0% 1% 1% 1% 1%Lane Group Flow (vph) 942 0 0 1446 207 0Turn Type PermProtected Phases 1 1 4 3 2 4Permitted Phases 1 4Detector Phases 1 1 4 1 4 3Minimum Initial (s) 8.0 8.0 2.0 8.0Minimum Split (s) 13.0 13.0 8.0 13.0Total Split (s) 81.0 0.0 95.0 95.0 17.0 0.0 8.0 14.0Total Split (%) 67.5% 0.0% 79.2% 79.2% 14.2% 0.0% 7% 12%Maximum Green (s) 76.0 12.0 6.0 9.0Yellow Time (s) 4.0 4.0 2.0 4.0All-Red Time (s) 1.0 1.0 0.0 1.0Lead/Lag Lead Lead Lag LagLead-Lag Optimize? Yes Yes Yes YesVehicle Extension (s) 4.0 4.0 3.0 4.0Recall Mode C-Min Min None MinWalk Time (s) 4.0Flash Dont Walk (s) 2.0Pedestrian Calls (#/hr) 4v/c Ratio 0.41 0.77 0.68Control Delay 6.0 2.3 55.4Queue Delay 0.1 0.0 1.2Total Delay 6.0 2.3 56.7Queue Length 50th (ft) 162 19 135Queue Length 95th (ft) m169 m32 #256Internal Link Dist (ft) 793 24 819Turn Bay Length (ft)Base Capacity (vph) 2322 1883 306Starvation Cap Reductn 0 0 0Spillback Cap Reductn 253 0 21Storage Cap Reductn 0 0 0Reduced v/c Ratio 0.46 0.77 0.73

    Intersection SummaryArea Type: OtherCycle Length: 120Actuated Cycle Length: 120Offset: 35 (29%), Referenced to phase 1:NBSB, Start of GreenNatural Cycle: 100Control Type: Actuated-Coordinated# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.m Volume for 95th percentile queue is metered by upstream signal.

    Splits and Phases: 2: Mystic Valley Pkwy & Auburn St

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak2: Mystic Valley Pkwy & Auburn St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement NBT NBR SBL SBT NWL NWRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900Lane Width 12 12 10 10 14 14Total Lost time (s) 4.0 4.0 4.0Lane Util. Factor 0.95 0.95 1.00Frt 1.00 1.00 0.95Flt Protected 1.00 1.00 0.97Satd. Flow (prot) 3598 3323 1848Flt Permitted 1.00 0.74 0.97Satd. Flow (perm) 3598 2465 1848Volume (vph) 820 19 105 1196 107 63Peak-hour factor, PHF 0.89 0.89 0.90 0.90 0.82 0.82Adj. Flow (vph) 921 21 117 1329 130 77RTOR Reduction (vph) 1 0 0 0 17 0Lane Group Flow (vph) 941 0 0 1446 190 0Heavy Vehicles (%) 0% 0% 1% 1% 1% 1%Turn Type PermProtected Phases 1 1 4 3Permitted Phases 1 4Actuated Green, G (s) 74.8 89.1 17.7Effective Green, g (s) 75.8 90.1 18.7Actuated g/C Ratio 0.63 0.75 0.16Clearance Time (s) 5.0 5.0Vehicle Extension (s) 4.0 4.0Lane Grp Cap (vph) 2273 1851 288v/s Ratio Prot 0.26 c0.10v/s Ratio Perm c0.59v/c Ratio 0.41 0.78 0.66Uniform Delay, d1 11.0 9.0 47.7Progression Factor 0.55 0.10 1.00Incremental Delay, d2 0.3 1.1 6.1Delay (s) 6.3 2.0 53.8Level of Service A A DApproach Delay (s) 6.3 2.0 53.8Approach LOS A A D

    Intersection SummaryHCM Average Control Delay 7.7 HCM Level of Service AHCM Volume to Capacity ratio 0.74Actuated Cycle Length (s) 120.0 Sum of lost time (s) 8.0Intersection Capacity Utilization 79.2% ICU Level of Service DAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak3: Mystic Valley Pkwy & Winthrop St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR 2Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width (ft) 14 14 14 12 12 12 12 12 12 12 12 12Total Lost Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0Leading Detector (ft) 50 50 50 50 50 50 50Trailing Detector (ft) 0 0 0 0 0 0 0Turning Speed (mph) 15 9 15 9 15 9 15 9Right Turn on Red Yes Yes Yes YesLink Speed (mph) 30 30 30 30Link Distance (ft) 1273 1257 632 825Travel Time (s) 28.9 28.6 14.4 18.8Volume (vph) 0 960 21 0 1050 201 30 402 366 555 862 119Peak Hour Factor 0.94 0.94 0.94 0.94 0.94 0.94 0.78 0.78 0.78 0.93 0.93 0.93Heavy Vehicles (%) 0% 0% 0% 1% 1% 1% 1% 1% 1% 1% 1% 1%Lane Group Flow (vph) 0 1043 0 0 1117 214 0 1022 0 0 1652 0Turn Type pm+ov Perm pm+ptProtected Phases 1 1 3 4 3 3 4 2Permitted Phases 1 4 3 4Detector Phases 1 1 3 4 4 3 3 4Minimum Initial (s) 12.0 12.0 8.0 8.0 8.0 8.0 4.0Minimum Split (s) 18.0 18.0 12.0 14.0 14.0 12.0 10.0Total Split (s) 0.0 55.0 0.0 0.0 55.0 19.0 36.0 36.0 0.0 19.0 55.0 0.0 10.0Total Split (%) 0.0% 45.8% 0.0% 0.0% 45.8% 15.8% 30.0% 30.0% 0.0% 15.8% 45.8% 0.0% 8%Maximum Green (s) 49.0 49.0 15.0 30.0 30.0 15.0 8.0Yellow Time (s) 4.0 4.0 3.0 4.0 4.0 3.0 2.0All-Red Time (s) 2.0 2.0 1.0 2.0 2.0 1.0 0.0Lead/Lag Lead Lead Lead Lag Lag Lead LagLead-Lag Optimize? Yes Yes YesVehicle Extension (s) 1.0 1.0 1.0 1.0 1.0 1.0 1.0Recall Mode C-Min C-Min None None None None NoneWalk Time (s) 5.0Flash Dont Walk (s) 3.0Pedestrian Calls (#/hr) 7v/c Ratio 1.24 1.42 0.20 1.64 1.51dlControl Delay 141.5 228.3 3.6 323.1 214.8Queue Delay 0.0 0.0 0.0 0.0 0.0Total Delay 141.5 228.3 3.6 323.1 214.8Queue Length 50th (ft) ~1026 ~1169 20 ~556 ~650Queue Length 95th (ft) #1288 #1425 48 #556 #1151Internal Link Dist (ft) 1193 1177 552 745Turn Bay Length (ft)Base Capacity (vph) 843 784 1062 622 1173Starvation Cap Reductn 0 0 0 0 0Spillback Cap Reductn 0 0 0 0 0Storage Cap Reductn 0 0 0 0 0Reduced v/c Ratio 1.24 1.42 0.20 1.64 1.41

    Intersection SummaryArea Type: OtherCycle Length: 120Actuated Cycle Length: 120Offset: 110 (92%), Referenced to phase 1:EBWB, Start of GreenNatural Cycle: 150Control Type: Actuated-Coordinated~ Volume exceeds capacity, queue is theoretically infinite. Queue shown is maximum after two cycles.# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.dl Defacto Left Lane. Recode with 1 though lane as a left lane.

    Splits and Phases: 3: Mystic Valley Pkwy & Winthrop St

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak3: Mystic Valley Pkwy & Winthrop St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width 14 14 14 12 12 12 12 12 12 12 12 12Total Lost time (s) 5.0 5.0 5.0 5.0 5.0Lane Util. Factor 1.00 1.00 1.00 0.95 0.95Frt 1.00 1.00 0.85 0.93 0.99Flt Protected 1.00 1.00 1.00 1.00 0.98Satd. Flow (prot) 2021 1881 1599 3322 3470Flt Permitted 1.00 1.00 1.00 0.59 0.58Satd. Flow (perm) 2021 1881 1599 1949 2064Volume (vph) 0 960 21 0 1050 201 30 402 366 555 862 119Peak-hour factor, PHF 0.94 0.94 0.94 0.94 0.94 0.94 0.78 0.78 0.78 0.93 0.93 0.93Adj. Flow (vph) 0 1021 22 0 1117 214 38 515 469 597 927 128RTOR Reduction (vph) 0 1 0 0 0 56 0 119 0 0 4 0Lane Group Flow (vph) 0 1042 0 0 1117 158 0 903 0 0 1648 0Heavy Vehicles (%) 0% 0% 0% 1% 1% 1% 1% 1% 1% 1% 1% 1%Turn Type pm+ov Perm pm+ptProtected Phases 1 1 3 4 3 3 4Permitted Phases 1 4 3 4Actuated Green, G (s) 47.4 47.4 70.4 30.0 53.0Effective Green, g (s) 48.4 48.4 70.4 31.0 53.0Actuated g/C Ratio 0.40 0.40 0.59 0.26 0.44Clearance Time (s) 6.0 6.0 4.0 6.0Vehicle Extension (s) 1.0 1.0 1.0 1.0Lane Grp Cap (vph) 815 759 938 503 1169v/s Ratio Prot 0.52 c0.59 0.03 c0.26v/s Ratio Perm 0.07 c0.46 0.36v/c Ratio 1.28 1.47 0.17 1.80 1.51dlUniform Delay, d1 35.8 35.8 11.4 44.5 33.5Progression Factor 0.71 1.00 1.00 1.00 1.00Incremental Delay, d2 133.9 219.4 0.0 366.1 189.4Delay (s) 159.5 255.2 11.4 410.6 222.9Level of Service F F B F FApproach Delay (s) 159.5 216.0 410.6 222.9Approach LOS F F F F

    Intersection SummaryHCM Average Control Delay 246.0 HCM Level of Service FHCM Volume to Capacity ratio 1.50Actuated Cycle Length (s) 120.0 Sum of lost time (s) 15.0Intersection Capacity Utilization 135.2% ICU Level of Service HAnalysis Period (min) 15dl Defacto Left Lane. Recode with 1 though lane as a left lane.c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak5: Mystic Valley Pkwy & Boston Ave Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWR 2Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width (ft) 12 12 12 12 12 12 14 14 14 14 14 14Total Lost Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0Leading Detector (ft) 50 50 50 50 50 50 50 50Trailing Detector (ft) 0 0 0 0 0 0 0 0Turning Speed (mph) 15 9 15 9 15 9 15 9Right Turn on Red Yes Yes Yes YesLink Speed (mph) 30 30 30 30Link Distance (ft) 575 873 2678 1345Travel Time (s) 13.1 19.8 60.9 30.6Volume (vph) 39 773 174 47 1177 79 48 419 84 73 264 8Peak Hour Factor 0.85 0.85 0.85 0.89 0.89 0.89 0.81 0.81 0.81 0.84 0.84 0.84Heavy Vehicles (%) 0% 0% 0% 1% 1% 1% 3% 3% 3% 3% 3% 3%Bus Blockages (#/hr) 0 0 0 0 0 0 0 0 0 6 6 6Lane Group Flow (vph) 0 1160 0 0 1464 0 0 680 0 0 411 0Turn Type Perm Perm Perm PermProtected Phases 1 1 3 3 2Permitted Phases 1 1 3 3Detector Phases 1 1 1 1 3 3 3 3Minimum Initial (s) 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 2.0Minimum Split (s) 12.0 12.0 12.0 12.0 12.0 12.0 12.0 12.0 8.0Total Split (s) 69.0 69.0 0.0 69.0 69.0 0.0 43.0 43.0 0.0 43.0 43.0 0.0 8.0Total Split (%) 57.5% 57.5% 0.0% 57.5% 57.5% 0.0% 35.8% 35.8% 0.0% 35.8% 35.8% 0.0% 7%Maximum Green (s) 65.0 65.0 65.0 65.0 39.0 39.0 39.0 39.0 6.0Yellow Time (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 2.0All-Red Time (s) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.0Lead/Lag Lead Lead Lead Lead LagLead-Lag Optimize? Yes Yes Yes Yes YesVehicle Extension (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0Recall Mode C-Min C-Min C-Min C-Min None None None None NoneWalk Time (s) 4.0Flash Dont Walk (s) 2.0Pedestrian Calls (#/hr) 8v/c Ratio 0.87 0.98 1.04 1.10Control Delay 31.4 51.9 83.0 114.1Queue Delay 0.0 0.0 0.0 0.0Total Delay 31.4 51.9 83.0 114.1Queue Length 50th (ft) 382 588 ~524 ~352Queue Length 95th (ft) 442 #728 #742 #551Internal Link Dist (ft) 495 793 2598 1265Turn Bay Length (ft)Base Capacity (vph) 1341 1487 653 372Starvation Cap Reductn 0 0 0 0Spillback Cap Reductn 0 0 0 0Storage Cap Reductn 0 0 0 0Reduced v/c Ratio 0.87 0.98 1.04 1.10

    Intersection SummaryArea Type: OtherCycle Length: 120Actuated Cycle Length: 120Offset: 0 (0%), Referenced to phase 1:NBSB, Start of GreenNatural Cycle: 120Control Type: Actuated-Coordinated~ Volume exceeds capacity, queue is theoretically infinite. Queue shown is maximum after two cycles.# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.

    Splits and Phases: 5: Mystic Valley Pkwy & Boston Ave

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak5: Mystic Valley Pkwy & Boston Ave Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width 12 12 12 12 12 12 14 14 14 14 14 14Total Lost time (s) 4.0 4.0 4.0 4.0Lane Util. Factor 0.95 0.95 1.00 1.00Frt 0.97 0.99 0.98 1.00Flt Protected 1.00 1.00 1.00 0.99Satd. Flow (prot) 3507 3535 1919 1894Flt Permitted 0.69 0.76 0.91 0.59Satd. Flow (perm) 2410 2705 1758 1135Volume (vph) 39 773 174 47 1177 79 48 419 84 73 264 8Peak-hour factor, PHF 0.85 0.85 0.85 0.89 0.89 0.89 0.81 0.81 0.81 0.84 0.84 0.84Adj. Flow (vph) 46 909 205 53 1322 89 59 517 104 87 314 10RTOR Reduction (vph) 0 16 0 0 4 0 0 5 0 0 1 0Lane Group Flow (vph) 0 1144 0 0 1460 0 0 675 0 0 410 0Heavy Vehicles (%) 0% 0% 0% 1% 1% 1% 3% 3% 3% 3% 3% 3%Bus Blockages (#/hr) 0 0 0 0 0 0 0 0 0 6 6 6Turn Type Perm Perm Perm PermProtected Phases 1 1 3 3Permitted Phases 1 1 3 3Actuated Green, G (s) 63.4 63.4 45.4 45.4Effective Green, g (s) 63.4 63.4 45.4 45.4Actuated g/C Ratio 0.53 0.53 0.38 0.38Clearance Time (s) 4.0 4.0 4.0 4.0Vehicle Extension (s) 4.0 4.0 4.0 4.0Lane Grp Cap (vph) 1273 1429 665 429v/s Ratio Protv/s Ratio Perm 0.47 c0.54 c0.38 0.36v/c Ratio 0.90 1.02 1.02 0.96Uniform Delay, d1 25.4 28.3 37.3 36.3Progression Factor 1.00 1.38 1.00 1.00Incremental Delay, d2 10.3 24.6 38.7 32.4Delay (s) 35.7 63.5 76.0 68.7Level of Service D E E EApproach Delay (s) 35.7 63.5 76.0 68.7Approach LOS D E E E

    Intersection SummaryHCM Average Control Delay 57.7 HCM Level of Service EHCM Volume to Capacity ratio 0.99Actuated Cycle Length (s) 120.0 Sum of lost time (s) 8.0Intersection Capacity Utilization 109.0% ICU Level of Service HAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak6: North St & Boston Ave Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWR 2Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Total Lost Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0Leading Detector (ft) 50 50 50 50 50 50 50 50Trailing Detector (ft) 0 0 0 0 0 0 0 0Turning Speed (mph) 15 9 15 9 15 9 15 9Right Turn on Red No No No NoLink Speed (mph) 30 30 30 30Link Distance (ft) 991 662 1345 1456Travel Time (s) 22.5 15.0 30.6 33.1Volume (vph) 29 20 15 68 56 50 2 539 56 15 281 8Peak Hour Factor 0.66 0.66 0.66 0.85 0.85 0.85 0.93 0.93 0.93 0.89 0.89 0.89Heavy Vehicles (%) 0% 0% 0% 2% 2% 2% 3% 3% 3% 3% 3% 3%Bus Blockages (#/hr) 0 0 0 0 0 0 6 6 6 6 6 6Lane Group Flow (vph) 0 97 0 0 205 0 0 642 0 0 342 0Turn Type Perm Perm Perm PermProtected Phases 3 3 1 1 2Permitted Phases 3 3 1 1Detector Phases 3 3 3 3 1 1 1 1Minimum Initial (s) 8.0 8.0 8.0 8.0 10.0 10.0 10.0 10.0 2.0Minimum Split (s) 13.0 13.0 13.0 13.0 15.0 15.0 15.0 15.0 8.0Total Split (s) 19.0 19.0 0.0 19.0 19.0 0.0 31.0 31.0 0.0 31.0 31.0 0.0 8.0Total Split (%) 32.8% 32.8% 0.0% 32.8% 32.8% 0.0% 53.4% 53.4% 0.0% 53.4% 53.4% 0.0% 14%Maximum Green (s) 14.0 14.0 14.0 14.0 26.0 26.0 26.0 26.0 6.0Yellow Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 2.0All-Red Time (s) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.0Lead/Lag Lead Lead Lead Lead LagLead-Lag Optimize? Yes Yes Yes Yes YesVehicle Extension (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 3.0Recall Mode None None None None Max Max Max Max NoneWalk Time (s) 4.0Flash Dont Walk (s) 2.0Pedestrian Calls (#/hr) 15v/c Ratio 0.25 0.55 0.64 0.35Control Delay 17.0 22.4 13.4 8.6Queue Delay 0.0 0.0 0.0 0.0Total Delay 17.0 22.4 13.4 8.6Queue Length 50th (ft) 21 48 108 46Queue Length 95th (ft) 42 109 #345 129Internal Link Dist (ft) 911 582 1265 1376Turn Bay Length (ft)Base Capacity (vph) 431 421 1009 982Starvation Cap Reductn 0 0 0 0Spillback Cap Reductn 0 0 0 0Storage Cap Reductn 0 0 0 0Reduced v/c Ratio 0.23 0.49 0.64 0.35

    Intersection SummaryArea Type: OtherCycle Length: 58Actuated Cycle Length: 52Natural Cycle: 60Control Type: Semi Act-Uncoord# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.

    Splits and Phases: 6: North St & Boston Ave

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak6: North St & Boston Ave Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Total Lost time (s) 4.0 4.0 4.0 4.0Lane Util. Factor 1.00 1.00 1.00 1.00Frt 0.97 0.96 0.99 1.00Flt Protected 0.98 0.98 1.00 1.00Satd. Flow (prot) 1798 1756 1777 1790Flt Permitted 0.83 0.85 1.00 0.97Satd. Flow (perm) 1527 1527 1776 1731Volume (vph) 29 20 15 68 56 50 2 539 56 15 281 8Peak-hour factor, PHF 0.66 0.66 0.66 0.85 0.85 0.85 0.93 0.93 0.93 0.89 0.89 0.89Adj. Flow (vph) 44 30 23 80 66 59 2 580 60 17 316 9RTOR Reduction (vph) 0 0 0 0 0 0 0 0 0 0 0 0Lane Group Flow (vph) 0 97 0 0 205 0 0 642 0 0 342 0Heavy Vehicles (%) 0% 0% 0% 2% 2% 2% 3% 3% 3% 3% 3% 3%Bus Blockages (#/hr) 0 0 0 0 0 0 6 6 6 6 6 6Turn Type Perm Perm Perm PermProtected Phases 3 3 1 1Permitted Phases 3 3 1 1Actuated Green, G (s) 11.9 11.9 28.6 28.6Effective Green, g (s) 12.9 12.9 29.6 29.6Actuated g/C Ratio 0.24 0.24 0.55 0.55Clearance Time (s) 5.0 5.0 5.0 5.0Vehicle Extension (s) 4.0 4.0 4.0 4.0Lane Grp Cap (vph) 368 368 981 956v/s Ratio Protv/s Ratio Perm 0.06 c0.13 c0.36 0.20v/c Ratio 0.26 0.56 0.65 0.36Uniform Delay, d1 16.5 17.8 8.4 6.7Progression Factor 1.00 1.00 1.00 1.00Incremental Delay, d2 0.5 2.3 3.4 1.0Delay (s) 17.0 20.1 11.8 7.7Level of Service B C B AApproach Delay (s) 17.0 20.1 11.8 7.7Approach LOS B C B A

    Intersection SummaryHCM Average Control Delay 12.4 HCM Level of Service BHCM Volume to Capacity ratio 0.58Actuated Cycle Length (s) 53.6 Sum of lost time (s) 8.0Intersection Capacity Utilization 50.9% ICU Level of Service AAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak7: Winthrop St & Boston Ave Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWR 3Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width (ft) 12 12 12 14 14 14 12 12 12 12 12 12Total Lost Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0Leading Detector (ft) 50 50 50 50 50 50 50 50Trailing Detector (ft) 0 0 0 0 0 0 0 0Turning Speed (mph) 15 9 15 9 15 9 15 9Right Turn on Red No No No NoLink Speed (mph) 30 30 30 30Link Distance (ft) 1296 2357 1456 2234Travel Time (s) 29.5 53.6 33.1 50.8Volume (vph) 9 334 64 134 131 94 201 405 25 34 183 88Peak Hour Factor 0.82 0.82 0.82 0.88 0.88 0.88 0.94 0.94 0.94 0.93 0.93 0.93Heavy Vehicles (%) 2% 2% 2% 2% 2% 2% 3% 3% 3% 5% 5% 5%Lane Group Flow (vph) 0 496 0 0 408 0 0 672 0 0 329 0Turn Type Perm Perm Perm PermProtected Phases 2 2 4 4 3Permitted Phases 2 2 4 4Detector Phases 2 2 2 2 4 4 4 4Minimum Initial (s) 10.0 10.0 10.0 10.0 30.0 30.0 30.0 30.0 2.0Minimum Split (s) 17.0 17.0 17.0 17.0 44.0 44.0 44.0 44.0 10.0Total Split (s) 42.0 42.0 0.0 42.0 42.0 0.0 48.0 48.0 0.0 48.0 48.0 0.0 10.0Total Split (%) 42.0% 42.0% 0.0% 42.0% 42.0% 0.0% 48.0% 48.0% 0.0% 48.0% 48.0% 0.0% 10%Maximum Green (s) 35.9 35.9 35.9 35.9 42.0 42.0 42.0 42.0 7.0Yellow Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 3.0All-Red Time (s) 2.1 2.1 2.1 2.1 2.0 2.0 2.0 2.0 0.0Lead/Lag Lag Lag Lag Lag LeadLead-Lag Optimize? Yes Yes Yes Yes YesVehicle Extension (s) 1.0 1.0 1.0 1.0 4.0 4.0 4.0 4.0 3.0Recall Mode None None None None Max Max Max Max NoneWalk Time (s) 5.0Flash Dont Walk (s) 2.0Pedestrian Calls (#/hr) 14v/c Ratio 0.68 1.08 1.09 0.45Control Delay 29.1 98.4 91.3 19.7Queue Delay 0.0 0.0 0.0 0.0Total Delay 29.1 98.4 91.3 19.7Queue Length 50th (ft) 224 ~257 ~429 119Queue Length 95th (ft) 345 #481 #738 230Internal Link Dist (ft) 1216 2277 1376 2154Turn Bay Length (ft)Base Capacity (vph) 726 378 614 724Starvation Cap Reductn 0 0 0 0Spillback Cap Reductn 0 0 0 0Storage Cap Reductn 0 0 0 0Reduced v/c Ratio 0.68 1.08 1.09 0.45

    Intersection SummaryArea Type: OtherCycle Length: 100Actuated Cycle Length: 92Natural Cycle: 150Control Type: Semi Act-Uncoord~ Volume exceeds capacity, queue is theoretically infinite. Queue shown is maximum after two cycles.# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.

    Splits and Phases: 7: Winthrop St & Boston Ave

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak7: Winthrop St & Boston Ave Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width 12 12 12 14 14 14 12 12 12 12 12 12Total Lost time (s) 5.0 5.0 5.0 5.0Lane Util. Factor 1.00 1.00 1.00 1.00Frt 0.98 0.96 0.99 0.96Flt Protected 1.00 0.98 0.98 0.99Satd. Flow (prot) 1821 1882 1806 1729Flt Permitted 0.99 0.52 0.73 0.89Satd. Flow (perm) 1802 993 1336 1556Volume (vph) 9 334 64 134 131 94 201 405 25 34 183 88Peak-hour factor, PHF 0.82 0.82 0.82 0.88 0.88 0.88 0.94 0.94 0.94 0.93 0.93 0.93Adj. Flow (vph) 11 407 78 152 149 107 214 431 27 37 197 95RTOR Reduction (vph) 0 0 0 0 0 0 0 0 0 0 0 0Lane Group Flow (vph) 0 496 0 0 408 0 0 672 0 0 329 0Heavy Vehicles (%) 2% 2% 2% 2% 2% 2% 3% 3% 3% 5% 5% 5%Turn Type Perm Perm Perm PermProtected Phases 2 2 4 4Permitted Phases 2 2 4 4Actuated Green, G (s) 36.0 36.0 42.1 42.1Effective Green, g (s) 37.1 37.1 43.1 43.1Actuated g/C Ratio 0.39 0.39 0.46 0.46Clearance Time (s) 6.1 6.1 6.0 6.0Vehicle Extension (s) 1.0 1.0 4.0 4.0Lane Grp Cap (vph) 707 390 609 710v/s Ratio Protv/s Ratio Perm 0.28 c0.41 c0.50 0.21v/c Ratio 0.70 1.05 1.10 0.46Uniform Delay, d1 24.1 28.7 25.7 17.7Progression Factor 1.00 1.00 1.00 1.00Incremental Delay, d2 2.6 58.1 68.1 2.2Delay (s) 26.6 86.8 93.8 19.9Level of Service C F F BApproach Delay (s) 26.6 86.8 93.8 19.9Approach LOS C F F B

    Intersection SummaryHCM Average Control Delay 62.1 HCM Level of Service EHCM Volume to Capacity ratio 1.08Actuated Cycle Length (s) 94.5 Sum of lost time (s) 14.3Intersection Capacity Utilization 117.6% ICU Level of Service HAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak8: College Ave & Boston Ave Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWR 9Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width (ft) 12 12 12 14 14 14 12 12 11 14 14 14Grade (%) 0% 0% 0% 2%Total Lost Time (s) 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0Leading Detector (ft) 50 50 50 50 50 50 50 50 50Trailing Detector (ft) 0 0 0 0 0 0 0 0 0Turning Speed (mph) 15 9 15 9 15 9 15 9Right Turn on Red Yes Yes Yes YesLink Speed (mph) 30 30 30 30Link Distance (ft) 1064 1813 2234 1738Travel Time (s) 24.2 41.2 50.8 39.5Volume (vph) 75 135 2 60 327 81 65 331 206 9 178 34Peak Hour Factor 0.90 0.90 0.90 0.89 0.89 0.89 0.87 0.87 0.87 0.74 0.74 0.74Heavy Vehicles (%) 1% 2% 1% 2% 2% 2% 2% 3% 3% 1% 1% 2%Lane Group Flow (vph) 83 152 0 0 525 0 0 455 237 0 299 0Turn Type Perm Split custom custom SplitProtected Phases 2 4 4 6 3 3 9Permitted Phases 2 6 6Detector Phases 2 2 4 4 6 6 6 3 3Minimum Initial (s) 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 2.0Minimum Split (s) 12.0 12.0 12.0 12.0 12.0 12.0 12.0 23.0 23.0 11.0Total Split (s) 49.0 49.0 0.0 39.0 39.0 0.0 49.0 49.0 49.0 25.0 25.0 0.0 11.0Total Split (%) 39.5% 39.5% 0.0% 31.5% 31.5% 0.0% 39.5% 39.5% 39.5% 20.2% 20.2% 0.0% 9%Maximum Green (s) 43.0 43.0 33.0 33.0 43.0 43.0 43.0 19.0 19.0 8.0Yellow Time (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0All-Red Time (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 0.0Lead/Lag Lag Lag Lead LeadLead-Lag Optimize? Yes Yes Yes YesVehicle Extension (s) 3.0 3.0 5.0 5.0 3.0 3.0 3.0 2.0 2.0 3.0Recall Mode Min Min Min Min Min Min Min None None NoneWalk Time (s) 5.0Flash Dont Walk (s) 3.0Pedestrian Calls (#/hr) 12v/c Ratio 0.12 0.22 0.96 0.96 0.38 0.94Control Delay 26.5 27.5 70.7 69.1 17.1 85.0Queue Delay 0.0 0.0 0.0 0.0 0.0 0.0Total Delay 26.5 27.5 70.7 69.1 17.1 85.0Queue Length 50th (ft) 39 73 365 311 63 212Queue Length 95th (ft) 84 139 #646 #558 138 #302Internal Link Dist (ft) 984 1733 2154 1658Turn Bay Length (ft)Base Capacity (vph) 690 683 549 476 625 319Starvation Cap Reductn 0 0 0 0 0 0Spillback Cap Reductn 0 0 0 0 0 0Storage Cap Reductn 0 0 0 0 0 0Reduced v/c Ratio 0.12 0.22 0.96 0.96 0.38 0.94

    Intersection SummaryArea Type: OtherCycle Length: 124Actuated Cycle Length: 117.4Natural Cycle: 130Control Type: Actuated-Uncoordinated# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.

    Splits and Phases: 8: College Ave & Boston Ave

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak8: College Ave & Boston Ave Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width 12 12 12 14 14 14 12 12 11 14 14 14Grade (%) 0% 0% 0% 2%Total Lost time (s) 6.0 6.0 6.0 6.0 6.0 6.0Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00Frt 1.00 1.00 0.98 1.00 0.85 0.98Flt Protected 0.95 1.00 0.99 0.99 1.00 1.00Satd. Flow (prot) 1787 1859 1928 1833 1516 1938Flt Permitted 1.00 1.00 0.99 0.70 1.00 1.00Satd. Flow (perm) 1881 1859 1928 1299 1516 1938Volume (vph) 75 135 2 60 327 81 65 331 206 9 178 34Peak-hour factor, PHF 0.90 0.90 0.90 0.89 0.89 0.89 0.87 0.87 0.87 0.74 0.74 0.74Adj. Flow (vph) 83 150 2 67 367 91 75 380 237 12 241 46RTOR Reduction (vph) 0 1 0 0 6 0 0 0 69 0 5 0Lane Group Flow (vph) 83 151 0 0 519 0 0 455 168 0 294 0Heavy Vehicles (%) 1% 2% 1% 2% 2% 2% 2% 3% 3% 1% 1% 2%Turn Type Perm Split custom custom SplitProtected Phases 2 4 4 6 3 3Permitted Phases 2 6 6Actuated Green, G (s) 43.1 43.1 33.1 43.1 43.1 19.0Effective Green, g (s) 43.1 43.1 33.1 43.1 43.1 19.0Actuated g/C Ratio 0.36 0.36 0.28 0.36 0.36 0.16Clearance Time (s) 6.0 6.0 6.0 6.0 6.0 6.0Vehicle Extension (s) 3.0 3.0 5.0 3.0 3.0 2.0Lane Grp Cap (vph) 680 672 535 470 548 309v/s Ratio Prot 0.08 c0.27 0.11 c0.15v/s Ratio Perm 0.04 c0.35v/c Ratio 0.12 0.23 0.97 0.97 0.31 0.95Uniform Delay, d1 25.4 26.4 42.6 37.4 27.3 49.6Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00Incremental Delay, d2 0.1 0.2 31.7 33.0 0.3 37.9Delay (s) 25.5 26.6 74.3 70.4 27.6 87.6Level of Service C C E E C FApproach Delay (s) 26.2 74.3 55.7 87.6Approach LOS C E E F

    Intersection SummaryHCM Average Control Delay 62.8 HCM Level of Service EHCM Volume to Capacity ratio 0.97Actuated Cycle Length (s) 119.2 Sum of lost time (s) 24.0Intersection Capacity Utilization 85.6% ICU Level of Service EAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak9: Warner St & Boston Ave Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR 9Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1600 1900 1900 1900 1900 1900 1900Lane Width (ft) 14 14 14 12 12 12 14 14 14 14 14 14Grade (%) 0% 1% 0% 0%Total Lost Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0Leading Detector (ft) 50 50 50 50 50 50 50 50 50Trailing Detector (ft) 0 0 0 0 0 0 0 0 0Turning Speed (mph) 15 9 15 9 15 9 15 9Right Turn on Red Yes Yes Yes NoLink Speed (mph) 30 30 30 30Link Distance (ft) 527 1795 1437 1738Travel Time (s) 12.0 40.8 32.7 39.5Volume (vph) 6 377 45 66 626 160 25 39 64 51 304 0Peak Hour Factor 0.92 0.92 0.92 0.91 0.91 0.91 0.89 0.89 0.89 0.86 0.86 0.86Heavy Vehicles (%) 2% 2% 2% 4% 4% 4% 0% 0% 0% 2% 2% 2%Lane Group Flow (vph) 0 466 0 0 761 176 0 144 0 0 412 0Turn Type Perm pm+pt Perm pm+pt PermProtected Phases 2 1 6 3 8 4 9Permitted Phases 2 6 6 8 4Detector Phases 2 2 1 6 6 3 8 4 4Minimum Initial (s) 10.0 10.0 6.0 10.0 10.0 6.0 6.0 6.0 6.0 2.0Minimum Split (s) 15.0 15.0 12.0 15.0 15.0 12.0 12.0 12.0 12.0 10.0Total Split (s) 49.0 49.0 0.0 12.0 61.0 61.0 12.0 40.0 0.0 28.0 28.0 0.0 10.0Total Split (%) 44.1% 44.1% 0.0% 10.8% 55.0% 55.0% 10.8% 36.0% 0.0% 25.2% 25.2% 0.0% 9%Maximum Green (s) 44.0 44.0 7.0 56.0 56.0 7.0 35.0 23.0 23.0 7.0Yellow Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 3.0All-Red Time (s) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.0Lead/Lag Lag Lag Lead Lead Lag LagLead-Lag Optimize? Yes Yes Yes Yes Yes YesVehicle Extension (s) 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 3.0Recall Mode Min Min None Min Min None None None None NoneWalk Time (s) 5.0Flash Dont Walk (s) 2.0Pedestrian Calls (#/hr) 4v/c Ratio 0.43 0.87 0.22 0.29 0.71Control Delay 11.1 26.9 2.3 19.5 35.9Queue Delay 0.0 0.0 0.0 0.0 0.0Total Delay 11.1 26.9 2.3 19.5 35.9Queue Length 50th (ft) 109 268 1 35 183Queue Length 95th (ft) 221 #636 29 104 #400Internal Link Dist (ft) 447 1715 1357 1658Turn Bay Length (ft)Base Capacity (vph) 1155 982 879 621 580Starvation Cap Reductn 0 0 0 0 0Spillback Cap Reductn 0 0 0 0 0Storage Cap Reductn 0 0 0 0 0Reduced v/c Ratio 0.40 0.77 0.20 0.23 0.71

    Intersection SummaryArea Type: OtherCycle Length: 111Actuated Cycle Length: 78.8Natural Cycle: 100Control Type: Actuated-Uncoordinated# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.

    Splits and Phases: 9: Warner St & Boston Ave

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak9: Warner St & Boston Ave Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1600 1900 1900 1900 1900 1900 1900Lane Width 14 14 14 12 12 12 14 14 14 14 14 14Grade (%) 0% 1% 0% 0%Total Lost time (s) 4.0 4.0 4.0 4.0 4.0Lane Util. Factor 1.00 1.00 1.00 1.00 1.00Frt 0.99 1.00 0.85 0.93 1.00Flt Protected 1.00 1.00 1.00 0.99 0.99Satd. Flow (prot) 1957 1809 1301 1872 1973Flt Permitted 0.99 0.92 1.00 0.87 0.94Satd. Flow (perm) 1939 1667 1301 1645 1858Volume (vph) 6 377 45 66 626 160 25 39 64 51 304 0Peak-hour factor, PHF 0.92 0.92 0.92 0.91 0.91 0.91 0.89 0.89 0.89 0.86 0.86 0.86Adj. Flow (vph) 7 410 49 73 688 176 28 44 72 59 353 0RTOR Reduction (vph) 0 3 0 0 0 77 0 33 0 0 0 0Lane Group Flow (vph) 0 463 0 0 761 99 0 111 0 0 412 0Heavy Vehicles (%) 2% 2% 2% 4% 4% 4% 0% 0% 0% 2% 2% 2%Turn Type Perm pm+pt Perm pm+pt PermProtected Phases 2 1 6 3 8 4Permitted Phases 2 6 6 8 4Actuated Green, G (s) 43.2 43.2 43.2 23.7 23.7Effective Green, g (s) 44.2 44.2 44.2 24.7 24.7Actuated g/C Ratio 0.55 0.55 0.55 0.30 0.30Clearance Time (s) 5.0 5.0 5.0 5.0 5.0Vehicle Extension (s) 2.0 2.0 2.0 2.0 2.0Lane Grp Cap (vph) 1058 910 710 502 567v/s Ratio Protv/s Ratio Perm 0.24 c0.46 0.08 0.07 c0.22v/c Ratio 0.44 0.84 0.14 0.22 0.73Uniform Delay, d1 11.0 15.4 9.0 21.0 25.1Progression Factor 1.00 1.00 1.00 1.00 1.00Incremental Delay, d2 0.1 6.4 0.0 0.1 3.9Delay (s) 11.1 21.8 9.1 21.1 29.1Level of Service B C A C CApproach Delay (s) 11.1 19.4 21.1 29.1Approach LOS B B C C

    Intersection SummaryHCM Average Control Delay 19.6 HCM Level of Service BHCM Volume to Capacity ratio 0.80Actuated Cycle Length (s) 81.0 Sum of lost time (s) 12.1Intersection Capacity Utilization 92.7% ICU Level of Service FAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak14: High St & Forest St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group EBR EBR2 WBL WBT WBR NBR2 SBL SBT SBRLane ConfigurationsIdeal Flow (vphpl) 1900 1500 1900 1900 1900 1900 1900 1900 1900Lane Width (ft) 12 12 12 12 12 14 14 14 14Total Lost Time (s) 5.0 5.0 5.0 5.0 5.0 4.0 4.0 4.0 4.0Leading Detector (ft) 50 50 50 50 50 50 50Trailing Detector (ft) 0 0 0 0 0 0 0Turning Speed (mph) 9 9 15 9 9 15 9Right Turn on Red Yes Yes Yes YesLink Speed (mph) 30 30Link Distance (ft) 723 1442Travel Time (s) 16.4 32.8Volume (vph) 375 298 1390 604 81 90 39 440 18Peak Hour Factor 0.93 0.93 0.89 0.89 0.89 0.80 0.98 0.98 0.98Heavy Vehicles (%) 6% 6% 4% 4% 4% 6% 3% 3% 3%Lane Group Flow (vph) 403 320 1562 770 0 112 0 507 0Turn Type custom custom Prot custom PermProtected Phases 4 4 1 1 4 2 2Permitted Phases 2Detector Phases 4 4 1 1 4 2 2 2Minimum Initial (s) 10.0 10.0 10.0 10.0 10.0 10.0Minimum Split (s) 23.0 23.0 23.0 26.0 26.0 26.0Total Split (s) 32.0 32.0 58.0 90.0 0.0 30.0 30.0 30.0 0.0Total Split (%) 26.7% 26.7% 48.3% 75.0% 0.0% 25.0% 25.0% 25.0% 0.0%Maximum Green (s) 27.0 27.0 53.0 26.0 26.0 26.0Yellow Time (s) 3.0 3.0 3.0 3.0 3.0 3.0All-Red Time (s) 2.0 2.0 2.0 1.0 1.0 1.0Lead/Lag Lead Lag Lag LagLead-Lag Optimize? Yes Yes Yes YesVehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0Recall Mode None None None None None NoneWalk Time (s) 10.0 10.0 10.0 10.0 10.0 10.0Flash Dont Walk (s) 8.0 8.0 8.0 12.0 12.0 12.0Pedestrian Calls (#/hr) 0 0 0 0 0 0v/c Ratio 1.17 1.10 1.05 0.60 0.12 1.20Control Delay 146.5 120.9 71.1 11.2 0.4 151.2Queue Delay 0.0 4.3 182.3 0.0 0.0 0.0Total Delay 146.5 125.2 253.3 11.2 0.4 151.2Queue Length 50th (ft) ~373 ~263 ~679 266 0 ~478Queue Length 95th (ft) #571 #448 #800 364 0 #694Internal Link Dist (ft) 643 1362Turn Bay Length (ft)Base Capacity (vph) 343 292 1487 1275 951 423Starvation Cap Reductn 0 0 0 0 0 0Spillback Cap Reductn 0 3 421 0 0 0Storage Cap Reductn 0 0 0 0 0 0Reduced v/c Ratio 1.17 1.11 1.47 0.60 0.12 1.20

    Intersection SummaryArea Type: OtherCycle Length: 120Actuated Cycle Length: 120Natural Cycle: 140Control Type: Actuated-Uncoordinated~ Volume exceeds capacity, queue is theoretically infinite. Queue shown is maximum after two cycles.# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.

    Splits and Phases: 14: High St & Forest St

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak14: High St & Forest St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement EBR EBR2 WBL WBT WBR NBR2 SBL SBT SBRLane ConfigurationsIdeal Flow (vphpl) 1900 1500 1900 1900 1900 1900 1900 1900 1900Lane Width 12 12 12 12 12 14 14 14 14Total Lost time (s) 5.0 5.0 5.0 5.0 4.0 4.0Lane Util. Factor 1.00 1.00 0.97 1.00 1.00 1.00Frt 0.85 0.85 1.00 0.98 0.86 1.00Flt Protected 1.00 1.00 0.95 1.00 1.00 1.00Satd. Flow (prot) 1524 1203 3367 1795 1654 1951Flt Permitted 1.00 1.00 0.95 1.00 1.00 1.00Satd. Flow (perm) 1524 1203 3367 1795 1654 1951Volume (vph) 375 298 1390 604 81 90 39 440 18Peak-hour factor, PHF 0.93 0.93 0.89 0.89 0.89 0.80 0.98 0.98 0.98Adj. Flow (vph) 403 320 1562 679 91 112 40 449 18RTOR Reduction (vph) 0 22 0 4 0 88 0 1 0Lane Group Flow (vph) 403 298 1562 766 0 24 0 506 0Heavy Vehicles (%) 6% 6% 4% 4% 4% 6% 3% 3% 3%Turn Type custom custom Prot custom PermProtected Phases 4 4 1 1 4 2 2Permitted Phases 2Actuated Green, G (s) 27.0 27.0 53.0 85.0 26.0 26.0Effective Green, g (s) 27.0 27.0 53.0 85.0 26.0 26.0Actuated g/C Ratio 0.22 0.22 0.44 0.71 0.22 0.22Clearance Time (s) 5.0 5.0 5.0 4.0 4.0Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0Lane Grp Cap (vph) 343 271 1487 1271 358 423v/s Ratio Prot c0.26 0.25 c0.46 0.43 0.01v/s Ratio Perm 0.26v/c Ratio 1.17 1.10 1.05 0.60 0.07 1.20Uniform Delay, d1 46.5 46.5 33.5 8.9 37.4 47.0Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00Incremental Delay, d2 105.1 84.3 37.8 0.8 0.1 109.5Delay (s) 151.6 130.8 71.3 9.7 37.4 156.5Level of Service F F E A D FApproach Delay (s) 51.0 156.5Approach LOS D F

    Intersection SummaryHCM Average Control Delay 83.1 HCM Level of Service FHCM Volume to Capacity ratio 1.12Actuated Cycle Length (s) 120.0 Sum of lost time (s) 14.0Intersection Capacity Utilization 101.1% ICU Level of Service GAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak18: Harvard St & Main St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR 9Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Total Lost Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0Leading Detector (ft) 50 50 50 50 50 50 50 50Trailing Detector (ft) 0 0 0 0 0 0 0 0Turning Speed (mph) 15 9 15 9 15 9 15 9Right Turn on Red No No No NoLink Speed (mph) 30 30 30 30Link Distance (ft) 1795 1383 1311 2727Travel Time (s) 40.8 31.4 29.8 62.0Volume (vph) 73 466 50 101 490 16 44 320 100 33 590 90Peak Hour Factor 0.91 0.91 0.91 0.90 0.90 0.90 0.77 0.77 0.77 0.88 0.88 0.88Heavy Vehicles (%) 2% 2% 2% 4% 4% 4% 5% 5% 5% 4% 4% 4%Lane Group Flow (vph) 0 647 0 0 674 0 0 603 0 0 810 0Turn Type Perm Perm Perm PermProtected Phases 4 8 6 2 9Permitted Phases 4 8 6 2Detector Phases 4 4 8 8 6 6 2 2Minimum Initial (s) 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 4.0Minimum Split (s) 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 11.0Total Split (s) 50.0 50.0 0.0 50.0 50.0 0.0 48.0 48.0 0.0 48.0 48.0 0.0 11.0Total Split (%) 45.9% 45.9% 0.0% 45.9% 45.9% 0.0% 44.0% 44.0% 0.0% 44.0% 44.0% 0.0% 10%Maximum Green (s) 44.0 44.0 44.0 44.0 42.0 42.0 42.0 42.0 8.0Yellow Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 3.0All-Red Time (s) 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 0.0Lead/LagLead-Lag Optimize?Vehicle Extension (s) 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 3.0Recall Mode None None None None None None None None NoneWalk Time (s) 4.0Flash Dont Walk (s) 4.0Pedestrian Calls (#/hr) 9v/c Ratio 1.11 1.33 1.19 1.24Control Delay 98.9 188.9 132.6 150.9Queue Delay 0.0 0.0 0.0 0.0Total Delay 98.9 188.9 132.6 150.9Queue Length 50th (ft) ~456 ~543 ~450 ~625Queue Length 95th (ft) #773 #868 #599 #951Internal Link Dist (ft) 1715 1303 1231 2647Turn Bay Length (ft)Base Capacity (vph) 584 506 507 651Starvation Cap Reductn 0 0 0 0Spillback Cap Reductn 0 0 0 0Storage Cap Reductn 0 0 0 0Reduced v/c Ratio 1.11 1.33 1.19 1.24

    Intersection SummaryArea Type: CBDCycle Length: 109Actuated Cycle Length: 100.2Natural Cycle: 150Control Type: Actuated-Uncoordinated~ Volume exceeds capacity, queue is theoretically infinite. Queue shown is maximum after two cycles.# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.

    Splits and Phases: 18: Harvard St & Main St

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak18: Harvard St & Main St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Total Lost time (s) 5.0 5.0 5.0 5.0Lane Util. Factor 1.00 1.00 1.00 1.00Frt 0.99 1.00 0.97 0.98Flt Protected 0.99 0.99 1.00 1.00Satd. Flow (prot) 1647 1625 1574 1612Flt Permitted 0.80 0.71 0.78 0.95Satd. Flow (perm) 1331 1170 1238 1531Volume (vph) 73 466 50 101 490 16 44 320 100 33 590 90Peak-hour factor, PHF 0.91 0.91 0.91 0.90 0.90 0.90 0.77 0.77 0.77 0.88 0.88 0.88Adj. Flow (vph) 80 512 55 112 544 18 57 416 130 38 670 102RTOR Reduction (vph) 0 0 0 0 0 0 0 0 0 0 0 0Lane Group Flow (vph) 0 647 0 0 674 0 0 603 0 0 810 0Heavy Vehicles (%) 2% 2% 2% 4% 4% 4% 5% 5% 5% 4% 4% 4%Turn Type Perm Perm Perm PermProtected Phases 4 8 6 2Permitted Phases 4 8 6 2Actuated Green, G (s) 44.1 44.1 42.1 42.1Effective Green, g (s) 45.1 45.1 43.1 43.1Actuated g/C Ratio 0.44 0.44 0.42 0.42Clearance Time (s) 6.0 6.0 6.0 6.0Vehicle Extension (s) 2.0 2.0 2.0 2.0Lane Grp Cap (vph) 584 514 520 643v/s Ratio Protv/s Ratio Perm 0.49 c0.58 0.49 c0.53v/c Ratio 1.11 1.31 1.16 1.26Uniform Delay, d1 28.8 28.8 29.8 29.8Progression Factor 1.00 1.00 1.00 1.00Incremental Delay, d2 70.4 153.5 91.6 129.2Delay (s) 99.2 182.3 121.4 159.0Level of Service F F F FApproach Delay (s) 99.2 182.3 121.4 159.0Approach LOS F F F F

    Intersection SummaryHCM Average Control Delay 142.3 HCM Level of Service FHCM Volume to Capacity ratio 1.29Actuated Cycle Length (s) 102.7 Sum of lost time (s) 14.5Intersection Capacity Utilization 110.0% ICU Level of Service HAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak40: Mystic Valley Pkwy & Auburn St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group NBL NBT SBT SBR SEL SER 2Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900Lane Width (ft) 12 12 14 14 14 14Total Lost Time (s) 4.0 4.0 4.0 4.0 4.0 4.0Leading Detector (ft) 50 50 50 50Trailing Detector (ft) 0 0 0 0Turning Speed (mph) 15 9 15 9Right Turn on Red Yes YesLink Speed (mph) 30 30 30Link Distance (ft) 104 1100 285Travel Time (s) 2.4 25.0 6.5Volume (vph) 49 824 1173 27 15 128Peak Hour Factor 0.93 0.93 0.98 0.98 0.83 0.83Heavy Vehicles (%) 0% 0% 1% 1% 0% 0%Lane Group Flow (vph) 53 886 1225 0 172 0Turn Type pm+ptProtected Phases 3 1 3 1 4 2Permitted Phases 1 3Detector Phases 3 1 3 1 4Minimum Initial (s) 8.0 8.0 8.0 2.0Minimum Split (s) 13.0 13.0 13.0 8.0Total Split (s) 17.0 98.0 81.0 0.0 14.0 0.0 8.0Total Split (%) 14.2% 81.7% 67.5% 0.0% 11.7% 0.0% 7%Maximum Green (s) 12.0 76.0 9.0 6.0Yellow Time (s) 4.0 4.0 4.0 2.0All-Red Time (s) 1.0 1.0 1.0 0.0Lead/Lag Lead Lead Lag LagLead-Lag Optimize? Yes Yes Yes YesVehicle Extension (s) 4.0 4.0 4.0 3.0Recall Mode Min C-Min Min NoneWalk Time (s) 4.0Flash Dont Walk (s) 2.0Pedestrian Calls (#/hr) 4v/c Ratio 0.15 0.56 0.95 0.83Control Delay 20.3 7.9 12.0 66.1Queue Delay 0.0 0.0 3.8 6.4Total Delay 20.3 7.9 15.8 72.5Queue Length 50th (ft) 8 355 207 87Queue Length 95th (ft) m43 482 m73 #180Internal Link Dist (ft) 24 1020 205Turn Bay Length (ft)Base Capacity (vph) 346 1572 1291 207Starvation Cap Reductn 0 0 0 0Spillback Cap Reductn 0 0 40 15Storage Cap Reductn 0 0 0 0Reduced v/c Ratio 0.15 0.56 0.98 0.90

    Intersection SummaryArea Type: OtherCycle Length: 120Actuated Cycle Length: 120Offset: 35 (29%), Referenced to phase 1:NBSB, Start of GreenNatural Cycle: 100Control Type: Actuated-Coordinated# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.m Volume for 95th percentile queue is metered by upstream signal.

    Splits and Phases: 40: Mystic Valley Pkwy & Auburn St

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak40: Mystic Valley Pkwy & Auburn St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement NBL NBT SBT SBR SEL SERLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900Lane Width 12 12 14 14 14 14Total Lost time (s) 4.0 4.0 4.0 4.0Lane Util. Factor 1.00 1.00 1.00 1.00Frt 1.00 1.00 1.00 0.88Flt Protected 0.95 1.00 1.00 0.99Satd. Flow (prot) 1805 1900 2000 1772Flt Permitted 0.05 1.00 1.00 0.99Satd. Flow (perm) 100 1900 2000 1772Volume (vph) 49 824 1173 27 15 128Peak-hour factor, PHF 0.93 0.93 0.98 0.98 0.83 0.83Adj. Flow (vph) 53 886 1197 28 18 154RTOR Reduction (vph) 0 0 1 0 55 0Lane Group Flow (vph) 53 886 1224 0 117 0Heavy Vehicles (%) 0% 0% 1% 1% 0% 0%Turn Type pm+ptProtected Phases 3 1 3 1 4Permitted Phases 1 3Actuated Green, G (s) 92.5 92.5 74.8 9.3Effective Green, g (s) 94.5 94.5 75.8 10.3Actuated g/C Ratio 0.79 0.79 0.63 0.09Clearance Time (s) 5.0 5.0 5.0Vehicle Extension (s) 4.0 4.0 4.0Lane Grp Cap (vph) 344 1496 1263 152v/s Ratio Prot 0.02 c0.47 c0.61 c0.07v/s Ratio Perm 0.10v/c Ratio 0.15 0.59 0.97 0.77Uniform Delay, d1 44.1 5.1 21.0 53.7Progression Factor 2.13 2.02 0.42 1.00Incremental Delay, d2 0.3 0.7 3.3 22.2Delay (s) 94.2 10.9 12.0 75.9Level of Service F B B EApproach Delay (s) 15.6 12.0 75.9Approach LOS B B E

    Intersection SummaryHCM Average Control Delay 18.2 HCM Level of Service BHCM Volume to Capacity ratio 0.86Actuated Cycle Length (s) 120.0 Sum of lost time (s) 12.0Intersection Capacity Utilization 78.8% ICU Level of Service DAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak54: Clipper Ship & Main St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group WBL WBR NBT NBR SBL SBT 1 4Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1700 1700Total Lost Time (s) 4.0 4.0 4.0 4.0 5.0 5.0Leading Detector (ft) 50 50 50 50Trailing Detector (ft) 0 0 0 0Turning Speed (mph) 15 9 9 15Right Turn on Red Yes YesLink Speed (mph) 30 30 30Link Distance (ft) 292 320 61Travel Time (s) 6.6 7.3 1.4Volume (vph) 0 0 90 415 50 2082Peak Hour Factor 0.92 0.92 0.93 0.93 0.97 0.97Heavy Vehicles (%) 2% 2% 7% 7% 3% 3%Lane Group Flow (vph) 0 0 97 446 0 2198Turn Type Free PermProtected Phases 2 1 2 4 1 4Permitted Phases Free 1 2 4Detector Phases 2 1 2 4 1 2 4Minimum Initial (s) 10.0 10.0 10.0Minimum Split (s) 26.0 23.0 23.0Total Split (s) 0.0 0.0 30.0 0.0 120.0 120.0 58.0 32.0Total Split (%) 0.0% 0.0% 25.0% 0.0% 100.0% 100.0% 48% 27%Maximum Green (s) 26.0 53.0 27.0Yellow Time (s) 3.0 3.0 3.0All-Red Time (s) 1.0 2.0 2.0Lead/Lag Lag LeadLead-Lag Optimize? Yes YesVehicle Extension (s) 3.0 3.0 3.0Recall Mode None None NoneWalk Time (s) 10.0 10.0 10.0Flash Dont Walk (s) 12.0 8.0 8.0Pedestrian Calls (#/hr) 0 0 0v/c Ratio 0.25 0.30 0.87Control Delay 41.0 0.5 9.8Queue Delay 0.0 0.0 0.0Total Delay 41.1 0.5 9.8Queue Length 50th (ft) 63 0 353Queue Length 95th (ft) 113 0 m150Internal Link Dist (ft) 212 240 1Turn Bay Length (ft)Base Capacity (vph) 385 1509 2521Starvation Cap Reductn 0 0 0Spillback Cap Reductn 6 0 0Storage Cap Reductn 0 0 0Reduced v/c Ratio 0.26 0.30 0.87

    Intersection SummaryArea Type: OtherCycle Length: 120Actuated Cycle Length: 120Natural Cycle: 140Control Type: Actuated-Uncoordinatedm Volume for 95th percentile queue is metered by upstream signal.

    Splits and Phases: 54: Clipper Ship & Main St

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak54: Clipper Ship & Main St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement WBL WBR NBT NBR SBL SBTLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1700 1700Total Lost time (s) 4.0 4.0 5.0Lane Util. Factor 1.00 1.00 0.95Frt 1.00 0.85 1.00Flt Protected 1.00 1.00 1.00Satd. Flow (prot) 1776 1509 3132Flt Permitted 1.00 1.00 0.80Satd. Flow (perm) 1776 1509 2520Volume (vph) 0 0 90 415 50 2082Peak-hour factor, PHF 0.92 0.92 0.93 0.93 0.97 0.97Adj. Flow (vph) 0 0 97 446 52 2146RTOR Reduction (vph) 0 0 0 0 0 0Lane Group Flow (vph) 0 0 97 446 0 2198Heavy Vehicles (%) 2% 2% 7% 7% 3% 3%Turn Type Free PermProtected Phases 2 1 2 4Permitted Phases Free 1 2 4Actuated Green, G (s) 26.0 120.0 120.0Effective Green, g (s) 26.0 120.0 120.0Actuated g/C Ratio 0.22 1.00 1.00Clearance Time (s) 4.0Vehicle Extension (s) 3.0Lane Grp Cap (vph) 385 1509 2520v/s Ratio Prot 0.05v/s Ratio Perm 0.30 c0.87v/c Ratio 0.25 0.30 0.87Uniform Delay, d1 38.9 0.0 0.0Progression Factor 1.00 1.00 1.00Incremental Delay, d2 0.3 0.5 0.3Delay (s) 39.3 0.5 0.3Level of Service D A AApproach Delay (s) 0.0 7.4 0.3Approach LOS A A A

    Intersection SummaryHCM Average Control Delay 1.7 HCM Level of Service AHCM Volume to Capacity ratio 0.87Actuated Cycle Length (s) 120.0 Sum of lost time (s) 0.0Intersection Capacity Utilization 73.4% ICU Level of Service DAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak19: Broadway & Dexter St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group EBU EBL2 EBT EBR EBR2 WBU WBL2 WBL WBT WBR NBL NBT NBR2 SBLLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1800 1800 1800 1800 1800 1900 1900 1900 1900Lane Width (ft) 12 12 12 12 12 12 12 12 12 12 14 14 14 14Grade (%) 0% 0% 1%Total Lost Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0Leading Detector (ft) 50 50 50 50 50 50 50 50 50 50 50Trailing Detector (ft) 0 0 0 0 0 0 0 0 0 0 0Turning Speed (mph) 9 15 9 9 9 15 15 9 15 9 15Right Turn on Red Yes YesLink Speed (mph) 30 30 30Link Distance (ft) 1210 1176 419Travel Time (s) 27.5 26.7 9.5Volume (vph) 4 15 671 477 21 1 5 20 492 57 230 154 33 21Peak Hour Factor 0.94 0.94 0.94 0.94 0.94 0.92 0.92 0.92 0.92 0.92 0.95 0.95 0.95 0.86Heavy Vehicles (%) 3% 3% 3% 3% 3% 3% 3% 3% 3% 3% 3% 3% 3% 2%Bus Blockages (#/hr) 0 0 0 3 3 0 0 0 0 0 3 3 3 0Lane Group Flow (vph) 0 0 734 529 0 0 0 0 625 0 0 439 0 0Turn Type Perm Perm pm+ov Perm Perm Perm Split SplitProtected Phases 2 4 6 4 4 8Permitted Phases 2 2 2 6 6 6Detector Phases 2 2 2 4 6 6 6 6 4 4 8Minimum Initial (s) 8.0 8.0 8.0 10.0 8.0 8.0 8.0 8.0 10.0 10.0 8.0Minimum Split (s) 14.0 14.0 14.0 16.0 14.0 14.0 14.0 14.0 16.0 16.0 14.0Total Split (s) 32.0 32.0 32.0 25.0 0.0 32.0 32.0 32.0 32.0 0.0 25.0 25.0 0.0 24.0Total Split (%) 29.1% 29.1% 29.1% 22.7% 0.0% 29.1% 29.1% 29.1% 29.1% 0.0% 22.7% 22.7% 0.0% 21.8%Maximum Green (s) 26.0 26.0 26.0 19.0 26.0 26.0 26.0 26.0 19.0 19.0 18.0Yellow Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0All-Red Time (s) 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0Lead/Lag LeadLead-Lag Optimize? YesVehicle Extension (s) 4.0 4.0 4.0 6.0 4.0 4.0 4.0 4.0 6.0 6.0 2.0Recall Mode Min Min Min None Min Min Min Min None None NoneWalk Time (s)Flash Dont Walk (s)Pedestrian Calls (#/hr)v/c Ratio 0.94 0.67 1.00 1.19Control Delay 57.3 24.3 75.7 147.4Queue Delay 0.0 0.0 0.0 0.0Total Delay 57.3 24.3 75.7 147.4Queue Length 50th (ft) 238 233 208 ~336Queue Length 95th (ft) #408 426 #376 #596Internal Link Dist (ft) 1130 1096 339Turn Bay Length (ft)Base Capacity (vph) 785 792 622 368Starvation Cap Reductn 0 0 0 0Spillback Cap Reductn 0 0 0 0Storage Cap Reductn 0 0 0 0Reduced v/c Ratio 0.94 0.67 1.00 1.19

    Intersection SummaryArea Type: OtherCycle Length: 110Actuated Cycle Length: 102Natural Cycle: 150Control Type: Actuated-Uncoordinated~ Volume exceeds capacity, queue is theoretically infinite. Queue shown is maximum after two cycles.# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak19: Broadway & Dexter St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Splits and Phases: 19: Broadway & Dexter St

    Lane Group SBT SBR SBR2 NET NER SWL2 SWL SWT SWR SWR2 5Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width (ft) 14 14 14 12 12 12 12 12 12 12Grade (%) 1% 0% 1%Total Lost Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0Leading Detector (ft) 50 50 50 50 50Trailing Detector (ft) 0 0 0 0 0Turning Speed (mph) 9 9 9 15 15 9 9Right Turn on Red Yes YesLink Speed (mph) 30 30 30Link Distance (ft) 1711 342 975Travel Time (s) 38.9 7.8 22.2Volume (vph) 294 21 24 0 92 20 84 15 39 7Peak Hour Factor 0.86 0.86 0.86 0.86 0.86 0.85 0.85 0.85 0.85 0.85Heavy Vehicles (%) 2% 2% 2% 0% 0% 0% 0% 0% 0% 0%Bus Blockages (#/hr) 0 0 0 0 0 0 0 0 0 0Lane Group Flow (vph) 418 0 0 107 0 0 0 195 0 0Turn Type Perm PermProtected Phases 8 7 3 5Permitted Phases 3 3Detector Phases 8 7 3 3 3Minimum Initial (s) 8.0 4.0 4.0 4.0 4.0 4.0Minimum Split (s) 14.0 10.0 10.0 10.0 10.0 10.0Total Split (s) 24.0 0.0 0.0 19.0 0.0 19.0 19.0 19.0 0.0 0.0 10.0Total Split (%) 21.8% 0.0% 0.0% 17.3% 0.0% 17.3% 17.3% 17.3% 0.0% 0.0% 9%Maximum Green (s) 18.0 13.0 13.0 13.0 13.0 7.0Yellow Time (s) 4.0 4.0 4.0 4.0 4.0 3.0All-Red Time (s) 2.0 2.0 2.0 2.0 2.0 0.0Lead/Lag Lead LagLead-Lag Optimize? Yes YesVehicle Extension (s) 2.0 2.0 2.0 2.0 2.0 3.0Recall Mode None None None None None NoneWalk Time (s) 4.0Flash Dont Walk (s) 3.0Pedestrian Calls (#/hr) 11v/c Ratio 1.15 0.47 1.12Control Delay 132.3 49.1 146.4Queue Delay 0.0 0.0 0.0Total Delay 132.3 49.1 146.4Queue Length 50th (ft) ~310 64 ~141Queue Length 95th (ft) #528 122 #291Internal Link Dist (ft) 1631 262 895Turn Bay Length (ft)Base Capacity (vph) 364 226 174Starvation Cap Reductn 0 0 0Spillback Cap Reductn 0 0 0Storage Cap Reductn 0 0 0Reduced v/c Ratio 1.15 0.47 1.12

    Intersection Summary

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak19: Broadway & Dexter St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement EBU EBL2 EBT EBR EBR2 WBU WBL2 WBL WBT WBR NBL NBT NBR2 SBLLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1800 1800 1800 1800 1800 1900 1900 1900 1900Lane Width 12 12 12 12 12 12 12 12 12 12 14 14 14 14Grade (%) 0% 0% 1%Total Lost time (s) 5.0 5.0 5.0 5.0Lane Util. Factor 0.95 1.00 0.95 1.00Frt 1.00 0.85 0.99 0.99Flt Protected 1.00 1.00 1.00 0.97Satd. Flow (prot) 3500 1549 3264 1862Flt Permitted 0.87 1.00 0.75 0.97Satd. Flow (perm) 3059 1549 2449 1862Volume (vph) 4 15 671 477 21 1 5 20 492 57 230 154 33 21Peak-hour factor, PHF 0.94 0.94 0.94 0.94 0.94 0.92 0.92 0.92 0.92 0.92 0.95 0.95 0.95 0.86Adj. Flow (vph) 4 16 714 507 22 1 5 22 535 62 242 162 35 24RTOR Reduction (vph) 0 0 0 2 0 0 0 0 0 0 0 2 0 0Lane Group Flow (vph) 0 0 734 527 0 0 0 0 625 0 0 437 0 0Heavy Vehicles (%) 3% 3% 3% 3% 3% 3% 3% 3% 3% 3% 3% 3% 3% 2%Bus Blockages (#/hr) 0 0 0 3 3 0 0 0 0 0 3 3 3 0Turn Type Perm Perm pm+ov Perm Perm Perm Split SplitProtected Phases 2 4 6 4 4 8Permitted Phases 2 2 2 6 6 6Actuated Green, G (s) 26.0 45.0 26.0 19.0Effective Green, g (s) 27.0 47.0 27.0 20.0Actuated g/C Ratio 0.26 0.45 0.26 0.19Clearance Time (s) 6.0 6.0 6.0 6.0Vehicle Extension (s) 4.0 6.0 4.0 6.0Lane Grp Cap (vph) 792 772 634 357v/s Ratio Prot 0.13 c0.23v/s Ratio Perm 0.24 0.21 c0.26v/c Ratio 0.93 0.68 0.99 1.22Uniform Delay, d1 37.7 22.7 38.5 42.2Progression Factor 1.00 1.00 1.00 1.00Incremental Delay, d2 16.9 3.8 31.9 122.9Delay (s) 54.6 26.5 70.4 165.0Level of Service D C E FApproach Delay (s) 42.8 70.4 165.0Approach LOS D E F

    Intersection SummaryHCM Average Control Delay 87.3 HCM Level of Service FHCM Volume to Capacity ratio 1.11Actuated Cycle Length (s) 104.3 Sum of lost time (s) 24.3Intersection Capacity Utilization 111.7% ICU Level of Service HAnalysis Period (min) 15c Critical Lane Group

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak19: Broadway & Dexter St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement SBT SBR SBR2 NET NER SWL2 SWL SWT SWR SWR2Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width 14 14 14 12 12 12 12 12 12 12Grade (%) 1% 0% 1%Total Lost time (s) 5.0 5.0 5.0Lane Util. Factor 1.00 1.00 1.00Frt 0.98 0.86 0.96Flt Protected 1.00 1.00 0.97Satd. Flow (prot) 1938 1644 1764Flt Permitted 1.00 1.00 0.71Satd. Flow (perm) 1938 1644 1288Volume (vph) 294 21 24 0 92 20 84 15 39 7Peak-hour factor, PHF 0.86 0.86 0.86 0.86 0.86 0.85 0.85 0.85 0.85 0.85Adj. Flow (vph) 342 24 28 0 107 24 99 18 46 8RTOR Reduction (vph) 2 0 0 0 0 0 0 2 0 0Lane Group Flow (vph) 416 0 0 107 0 0 0 193 0 0Heavy Vehicles (%) 2% 2% 2% 0% 0% 0% 0% 0% 0% 0%Bus Blockages (#/hr) 0 0 0 0 0 0 0 0 0 0Turn Type Perm PermProtected Phases 8 7 3Permitted Phases 3 3Actuated Green, G (s) 18.0 13.0 13.0Effective Green, g (s) 19.0 14.0 14.0Actuated g/C Ratio 0.18 0.13 0.13Clearance Time (s) 6.0 6.0 6.0Vehicle Extension (s) 2.0 2.0 2.0Lane Grp Cap (vph) 353 221 173v/s Ratio Prot c0.21 0.07v/s Ratio Perm c0.15v/c Ratio 1.18 0.48 1.12Uniform Delay, d1 42.6 41.8 45.2Progression Factor 1.00 1.00 1.00Incremental Delay, d2 105.4 0.6 103.3Delay (s) 148.0 42.4 148.5Level of Service F D FApproach Delay (s) 148.0 42.4 148.5Approach LOS F D F

    Intersection Summary

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak21: Central St & Medford St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWR 2Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Total Lost Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0Leading Detector (ft) 50 50 50 50 50 50 50 50Trailing Detector (ft) 0 0 0 0 0 0 0 0Turning Speed (mph) 15 9 15 9 15 9 15 9Right Turn on Red Yes No No YesLink Speed (mph) 30 30 30 30Link Distance (ft) 1721 833 1629 1556Travel Time (s) 39.1 18.9 37.0 35.4Volume (vph) 55 199 79 22 177 13 13 607 118 84 256 10Peak Hour Factor 0.82 0.82 0.82 0.85 0.85 0.85 0.91 0.91 0.91 0.91 0.91 0.91Heavy Vehicles (%) 2% 2% 2% 3% 3% 3% 2% 2% 2% 4% 4% 4%Lane Group Flow (vph) 0 406 0 0 249 0 0 811 0 0 384 0Turn Type Perm Perm Perm PermProtected Phases 3 3 1 1 2Permitted Phases 3 3 1 1Detector Phases 3 3 3 3 1 1 1 1Minimum Initial (s) 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 4.0Minimum Split (s) 14.0 14.0 14.0 14.0 14.0 14.0 14.0 14.0 8.0Total Split (s) 24.0 24.0 0.0 24.0 24.0 0.0 36.0 36.0 0.0 36.0 36.0 0.0 8.0Total Split (%) 35.3% 35.3% 0.0% 35.3% 35.3% 0.0% 52.9% 52.9% 0.0% 52.9% 52.9% 0.0% 12%Maximum Green (s) 20.0 20.0 20.0 20.0 32.0 32.0 32.0 32.0 6.0Yellow Time (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 2.0All-Red Time (s) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.0Lead/Lag Lead Lead Lead Lead LagLead-Lag Optimize? Yes Yes Yes Yes YesVehicle Extension (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 3.0Recall Mode None None None None Max Max Max Max NoneWalk Time (s) 4.0Flash Dont Walk (s) 2.0Pedestrian Calls (#/hr) 15v/c Ratio 0.79 0.48 0.83 0.59Control Delay 32.1 20.9 23.5 15.3Queue Delay 0.0 0.0 0.0 0.0Total Delay 32.1 20.9 23.5 15.3Queue Length 50th (ft) 119 69 225 85Queue Length 95th (ft) #245 139 #544 213Internal Link Dist (ft) 1641 753 1549 1476Turn Bay Length (ft)Base Capacity (vph) 546 558 972 654Starvation Cap Reductn 0 0 0 0Spillback Cap Reductn 0 0 0 0Storage Cap Reductn 0 0 0 0Reduced v/c Ratio 0.74 0.45 0.83 0.59

    Intersection SummaryArea Type: OtherCycle Length: 68Actuated Cycle Length: 59.9Natural Cycle: 80Control Type: Semi Act-Uncoord# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.

    Splits and Phases: 21: Central St & Medford St

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak21: Central St & Medford St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Total Lost time (s) 4.0 4.0 4.0 4.0Lane Util. Factor 1.00 1.00 1.00 1.00Frt 0.97 0.99 0.98 1.00Flt Protected 0.99 0.99 1.00 0.99Satd. Flow (prot) 1789 1820 1821 1798Flt Permitted 0.91 0.94 0.99 0.73Satd. Flow (perm) 1643 1721 1809 1326Volume (vph) 55 199 79 22 177 13 13 607 118 84 256 10Peak-hour factor, PHF 0.82 0.82 0.82 0.85 0.85 0.85 0.91 0.91 0.91 0.91 0.91 0.91Adj. Flow (vph) 67 243 96 26 208 15 14 667 130 92 281 11RTOR Reduction (vph) 0 16 0 0 0 0 0 0 0 0 1 0Lane Group Flow (vph) 0 390 0 0 249 0 0 811 0 0 383 0Heavy Vehicles (%) 2% 2% 2% 3% 3% 3% 2% 2% 2% 4% 4% 4%Turn Type Perm Perm Perm PermProtected Phases 3 3 1 1Permitted Phases 3 3 1 1Actuated Green, G (s) 18.2 18.2 32.2 32.2Effective Green, g (s) 18.2 18.2 32.2 32.2Actuated g/C Ratio 0.30 0.30 0.52 0.52Clearance Time (s) 4.0 4.0 4.0 4.0Vehicle Extension (s) 4.0 4.0 4.0 4.0Lane Grp Cap (vph) 486 509 947 694v/s Ratio Protv/s Ratio Perm c0.24 0.14 c0.45 0.29v/c Ratio 0.80 0.49 0.86 0.55Uniform Delay, d1 20.0 17.8 12.7 9.8Progression Factor 1.00 1.00 1.00 1.00Incremental Delay, d2 9.7 1.0 9.8 3.1Delay (s) 29.7 18.8 22.5 12.9Level of Service C B C BApproach Delay (s) 29.7 18.8 22.5 12.9Approach LOS C B C B

    Intersection SummaryHCM Average Control Delay 21.6 HCM Level of Service CHCM Volume to Capacity ratio 0.79Actuated Cycle Length (s) 61.5 Sum of lost time (s) 8.0Intersection Capacity Utilization 97.1% ICU Level of Service FAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak22: School St & Medford St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWR 2Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width (ft) 12 12 12 14 14 14 14 14 14 14 14 14Total Lost Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0Leading Detector (ft) 50 50 50 50 50 50Trailing Detector (ft) 0 0 0 0 0 0Turning Speed (mph) 15 9 15 9 15 9 15 9Right Turn on Red Yes Yes Yes YesLink Speed (mph) 30 30 30 30Link Distance (ft) 953 959 1556 1535Travel Time (s) 21.7 21.8 35.4 34.9Volume (vph) 0 0 0 138 301 21 11 719 98 158 278 72Peak Hour Factor 0.92 0.92 0.92 0.92 0.92 0.92 0.96 0.96 0.96 0.88 0.88 0.88Heavy Vehicles (%) 2% 2% 2% 0% 0% 0% 1% 1% 1% 3% 3% 3%Bus Blockages (#/hr) 0 0 0 0 0 0 3 3 3 3 3 3Lane Group Flow (vph) 0 0 0 0 500 0 0 862 0 0 578 0Turn Type Perm Perm PermProtected Phases 3 1 1 2Permitted Phases 3 1 1Detector Phases 3 3 1 1 1 1Minimum Initial (s) 10.0 10.0 10.0 10.0 10.0 10.0 4.0Minimum Split (s) 14.0 14.0 14.0 14.0 14.0 14.0 9.0Total Split (s) 0.0 0.0 0.0 19.0 19.0 0.0 39.0 39.0 0.0 39.0 39.0 0.0 9.0Total Split (%) 0.0% 0.0% 0.0% 28.4% 28.4% 0.0% 58.2% 58.2% 0.0% 58.2% 58.2% 0.0% 13%Maximum Green (s) 15.0 15.0 35.0 35.0 35.0 35.0 6.0Yellow Time (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0All-Red Time (s) 1.0 1.0 1.0 1.0 1.0 1.0 0.0Lead/Lag Lead Lead Lead Lead LagLead-Lag Optimize? Yes Yes Yes Yes YesVehicle Extension (s) 4.0 4.0 4.0 4.0 4.0 4.0 3.0Recall Mode None None Max Max Max Max NoneWalk Time (s) 4.0Flash Dont Walk (s) 2.0Pedestrian Calls (#/hr) 18v/c Ratio 1.00 0.75 0.97Control Delay 66.3 15.8 46.6Queue Delay 0.0 0.0 0.0Total Delay 66.3 15.8 46.6Queue Length 50th (ft) 171 180 155Queue Length 95th (ft) #417 #511 #438Internal Link Dist (ft) 873 879 1476 1455Turn Bay Length (ft)Base Capacity (vph) 501 1144 596Starvation Cap Reductn 0 0 0Spillback Cap Reductn 0 0 0Storage Cap Reductn 0 0 0Reduced v/c Ratio 1.00 0.75 0.97

    Intersection SummaryArea Type: OtherCycle Length: 67Actuated Cycle Length: 59.8Natural Cycle: 100Control Type: Semi Act-Uncoord# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.

    Splits and Phases: 22: School St & Medford St

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak22: School St & Medford St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width 12 12 12 14 14 14 14 14 14 14 14 14Total Lost time (s) 4.0 4.0 4.0Lane Util. Factor 1.00 1.00 1.00Frt 0.99 0.98 0.98Flt Protected 0.99 1.00 0.98Satd. Flow (prot) 1984 1950 1878Flt Permitted 0.99 0.99 0.57Satd. Flow (perm) 1984 1937 1090Volume (vph) 0 0 0 138 301 21 11 719 98 158 278 72Peak-hour factor, PHF 0.92 0.92 0.92 0.92 0.92 0.92 0.96 0.96 0.96 0.88 0.88 0.88Adj. Flow (vph) 0 0 0 150 327 23 11 749 102 180 316 82RTOR Reduction (vph) 0 0 0 0 2 0 0 7 0 0 8 0Lane Group Flow (vph) 0 0 0 0 498 0 0 855 0 0 570 0Heavy Vehicles (%) 2% 2% 2% 0% 0% 0% 1% 1% 1% 3% 3% 3%Bus Blockages (#/hr) 0 0 0 0 0 0 3 3 3 3 3 3Turn Type Perm Perm PermProtected Phases 3 1 1Permitted Phases 3 1 1Actuated Green, G (s) 15.1 35.1 35.1Effective Green, g (s) 15.1 35.1 35.1Actuated g/C Ratio 0.24 0.56 0.56Clearance Time (s) 4.0 4.0 4.0Vehicle Extension (s) 4.0 4.0 4.0Lane Grp Cap (vph) 481 1091 614v/s Ratio Protv/s Ratio Perm 0.25 0.44 c0.52v/c Ratio 1.03 0.78 0.93Uniform Delay, d1 23.6 10.6 12.4Progression Factor 1.00 1.00 1.00Incremental Delay, d2 50.3 5.7 22.3Delay (s) 73.9 16.3 34.8Level of Service E B CApproach Delay (s) 0.0 73.9 16.3 34.8Approach LOS A E B C

    Intersection SummaryHCM Average Control Delay 36.6 HCM Level of Service DHCM Volume to Capacity ratio 0.96Actuated Cycle Length (s) 62.3 Sum of lost time (s) 12.1Intersection Capacity Utilization 106.9% ICU Level of Service GAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak23: Walnut St & Medford St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWR 2Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Total Lost Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0Leading Detector (ft) 50 50 50 50 50Trailing Detector (ft) 0 0 0 0 0Turning Speed (mph) 15 9 15 9 15 9 15 9Right Turn on Red Yes Yes Yes YesLink Speed (mph) 30 30 30 30Link Distance (ft) 779 844 1535 533Travel Time (s) 17.7 19.2 34.9 12.1Volume (vph) 77 201 8 0 0 0 8 585 0 0 165 21Peak Hour Factor 0.95 0.95 0.95 0.92 0.92 0.92 0.96 0.96 0.96 0.88 0.88 0.88Heavy Vehicles (%) 1% 1% 1% 2% 2% 2% 1% 1% 1% 3% 3% 3%Lane Group Flow (vph) 0 301 0 0 0 0 0 617 0 0 212 0Turn Type Perm PermProtected Phases 3 1 1 2Permitted Phases 3 1Detector Phases 3 3 1 1 1Minimum Initial (s) 25.0 25.0 25.0 25.0 25.0 4.0Minimum Split (s) 31.0 31.0 31.0 31.0 31.0 8.0Total Split (s) 31.0 31.0 0.0 0.0 0.0 0.0 33.0 33.0 0.0 0.0 33.0 0.0 8.0Total Split (%) 43.1% 43.1% 0.0% 0.0% 0.0% 0.0% 45.8% 45.8% 0.0% 0.0% 45.8% 0.0% 11%Maximum Green (s) 25.0 25.0 27.0 27.0 27.0 6.0Yellow Time (s) 4.0 4.0 4.0 4.0 4.0 2.0All-Red Time (s) 2.0 2.0 2.0 2.0 2.0 0.0Lead/Lag Lead Lead Lead LagLead-Lag Optimize? Yes Yes Yes YesVehicle Extension (s) 4.0 4.0 4.0 4.0 4.0 3.0Recall Mode Min Min Min Min Min NoneWalk Time (s) 4.0Flash Dont Walk (s) 2.0Pedestrian Calls (#/hr) 18v/c Ratio 0.40 0.78 0.27Control Delay 16.6 25.9 13.4Queue Delay 0.0 0.0 0.0Total Delay 16.6 25.9 13.4Queue Length 50th (ft) 79 192 47Queue Length 95th (ft) 166 #426 105Internal Link Dist (ft) 699 764 1455 453Turn Bay Length (ft)Base Capacity (vph) 745 802 783Starvation Cap Reductn 0 0 0Spillback Cap Reductn 0 0 0Storage Cap Reductn 0 0 0Reduced v/c Ratio 0.40 0.77 0.27

    Intersection SummaryArea Type: OtherCycle Length: 72Actuated Cycle Length: 64.8Natural Cycle: 70Control Type: Semi Act-Uncoord# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.

    Splits and Phases: 23: Walnut St & Medford St

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak23: Walnut St & Medford St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement NBL NBT NBR SBL SBT SBR SEL SET SER NWL NWT NWRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Total Lost time (s) 5.0 5.0 5.0Lane Util. Factor 1.00 1.00 1.00Frt 1.00 1.00 0.98Flt Protected 0.99 1.00 1.00Satd. Flow (prot) 1850 1880 1816Flt Permitted 0.99 1.00 1.00Satd. Flow (perm) 1850 1874 1816Volume (vph) 77 201 8 0 0 0 8 585 0 0 165 21Peak-hour factor, PHF 0.95 0.95 0.95 0.92 0.92 0.92 0.96 0.96 0.96 0.88 0.88 0.88Adj. Flow (vph) 81 212 8 0 0 0 8 609 0 0 188 24RTOR Reduction (vph) 0 1 0 0 0 0 0 0 0 0 6 0Lane Group Flow (vph) 0 300 0 0 0 0 0 617 0 0 206 0Heavy Vehicles (%) 1% 1% 1% 2% 2% 2% 1% 1% 1% 3% 3% 3%Turn Type Perm PermProtected Phases 3 1 1Permitted Phases 3 1Actuated Green, G (s) 25.1 26.3 26.3Effective Green, g (s) 26.1 27.3 27.3Actuated g/C Ratio 0.39 0.41 0.41Clearance Time (s) 6.0 6.0 6.0Vehicle Extension (s) 4.0 4.0 4.0Lane Grp Cap (vph) 726 769 746v/s Ratio Prot 0.11v/s Ratio Perm 0.16 c0.33v/c Ratio 0.41 0.80 0.28Uniform Delay, d1 14.6 17.2 13.0Progression Factor 1.00 1.00 1.00Incremental Delay, d2 0.5 6.4 0.3Delay (s) 15.2 23.6 13.3Level of Service B C BApproach Delay (s) 15.2 0.0 23.6 13.3Approach LOS B A C B

    Intersection SummaryHCM Average Control Delay 19.4 HCM Level of Service BHCM Volume to Capacity ratio 0.58Actuated Cycle Length (s) 66.5 Sum of lost time (s) 10.0Intersection Capacity Utilization 66.3% ICU Level of Service CAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak24: Highland Ave & Medford St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR 2Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width (ft) 12 12 12 14 14 14 12 12 12 12 12 12Grade (%) 0% 1% 0% 0%Total Lost Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0Leading Detector (ft) 50 50 50 50 50 50 50 50 50Trailing Detector (ft) 0 0 0 0 0 0 0 0 0Turning Speed (mph) 15 9 15 9 15 9 15 9Right Turn on Red Yes Yes Yes YesLink Speed (mph) 30 30 30 30Link Distance (ft) 1836 1794 671 533Travel Time (s) 41.7 40.8 15.3 12.1Volume (vph) 0 614 24 34 411 189 3 0 19 554 33 6Peak Hour Factor 0.93 0.93 0.93 0.87 0.87 0.87 0.56 0.56 0.56 0.95 0.95 0.95Heavy Vehicles (%) 3% 3% 3% 5% 5% 5% 5% 5% 5% 2% 2% 2%Lane Group Flow (vph) 0 686 0 0 511 217 0 39 0 0 624 0Turn Type Perm Perm custom Perm PermProtected Phases 3 3 1 1 2Permitted Phases 3 3 1 3 1 1Detector Phases 3 3 3 3 1 3 1 1 1 1Minimum Initial (s) 8.0 8.0 8.0 8.0 8.0 8.0 8.0 8.0 4.0Minimum Split (s) 13.0 13.0 13.0 13.0 13.0 13.0 13.0 13.0 8.0Total Split (s) 42.0 42.0 0.0 42.0 42.0 75.0 33.0 33.0 0.0 33.0 33.0 0.0 8.0Total Split (%) 50.6% 50.6% 0.0% 50.6% 50.6% 90.4% 39.8% 39.8% 0.0% 39.8% 39.8% 0.0% 10%Maximum Green (s) 37.0 37.0 37.0 37.0 28.0 28.0 28.0 28.0 6.0Yellow Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 2.0All-Red Time (s) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.0Lead/Lag Lead Lead Lead Lead LagLead-Lag Optimize? Yes Yes Yes Yes YesVehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0Recall Mode Max Max Max Max None None None None NoneWalk Time (s) 4.0Flash Dont Walk (s) 2.0Pedestrian Calls (#/hr) 10v/c Ratio 0.75 0.81 0.14 0.07 1.24Control Delay 22.7 29.5 0.3 7.5 149.6Queue Delay 0.0 0.0 0.0 0.0 0.0Total Delay 22.7 29.5 0.3 7.5 149.6Queue Length 50th (ft) 235 184 0 1 ~365Queue Length 95th (ft) #496 #403 5 9 #639Internal Link Dist (ft) 1756 1714 591 453Turn Bay Length (ft)Base Capacity (vph) 913 632 1591 594 503Starvation Cap Reductn 0 0 0 0 0Spillback Cap Reductn 0 0 0 0 0Storage Cap Reductn 0 0 0 0 0Reduced v/c Ratio 0.75 0.81 0.14 0.07 1.24

    Intersection SummaryArea Type: OtherCycle Length: 83Actuated Cycle Length: 76.6Natural Cycle: 110Control Type: Semi Act-Uncoord~ Volume exceeds capacity, queue is theoretically infinite. Queue shown is maximum after two cycles.# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.

    Splits and Phases: 24: Highland Ave & Medford St

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak24: Highland Ave & Medford St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Lane Width 12 12 12 14 14 14 12 12 12 12 12 12Grade (%) 0% 1% 0% 0%Total Lost time (s) 4.0 4.0 4.0 4.0 4.0Lane Util. Factor 1.00 1.00 1.00 1.00 1.00Frt 0.99 1.00 0.85 0.88 1.00Flt Protected 1.00 1.00 1.00 0.99 0.96Satd. Flow (prot) 1835 1913 1632 1586 1777Flt Permitted 1.00 0.75 1.00 0.94 0.71Satd. Flow (perm) 1835 1434 1632 1500 1324Volume (vph) 0 614 24 34 411 189 3 0 19 554 33 6Peak-hour factor, PHF 0.93 0.93 0.93 0.87 0.87 0.87 0.56 0.56 0.56 0.95 0.95 0.95Adj. Flow (vph) 0 660 26 39 472 217 5 0 34 583 35 6RTOR Reduction (vph) 0 2 0 0 0 20 0 21 0 0 1 0Lane Group Flow (vph) 0 684 0 0 511 197 0 18 0 0 623 0Heavy Vehicles (%) 3% 3% 3% 5% 5% 5% 5% 5% 5% 2% 2% 2%Turn Type Perm Perm custom Perm PermProtected Phases 3 3 1 1Permitted Phases 3 3 1 3 1 1Actuated Green, G (s) 37.1 37.1 70.1 28.0 28.0Effective Green, g (s) 38.1 38.1 71.1 29.0 29.0Actuated g/C Ratio 0.49 0.49 0.91 0.37 0.37Clearance Time (s) 5.0 5.0 5.0 5.0Vehicle Extension (s) 3.0 3.0 3.0 3.0Lane Grp Cap (vph) 894 699 1484 556 491v/s Ratio Prot c0.37v/s Ratio Perm 0.36 0.12 0.01 c0.47v/c Ratio 0.77 0.73 0.13 0.03 1.27Uniform Delay, d1 16.4 16.0 0.4 15.7 24.6Progression Factor 1.00 1.00 1.00 1.00 1.00Incremental Delay, d2 6.2 6.6 0.0 0.0 136.6Delay (s) 22.6 22.6 0.4 15.7 161.2Level of Service C C A B FApproach Delay (s) 22.6 16.0 15.7 161.2Approach LOS C B B F

    Intersection SummaryHCM Average Control Delay 61.8 HCM Level of Service EHCM Volume to Capacity ratio 0.94Actuated Cycle Length (s) 78.2 Sum of lost time (s) 8.0Intersection Capacity Utilization 95.8% ICU Level of Service FAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak25: Somerville Ave & McGrath Hwy Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1800 1800Lane Width (ft) 12 12 12 12 12 12 12 12 14 12 12 12Total Lost Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0Turning Speed (mph) 15 9 15 9 15 9 15 9Right Turn on Red Yes Yes Yes YesLink Speed (mph) 30 30 30 30Link Distance (ft) 1509 895 890 512Travel Time (s) 34.3 20.3 20.2 11.6Volume (vph) 99 359 117 0 0 0 45 200 27 199 1233 139Peak Hour Factor 0.93 0.93 0.93 0.92 0.92 0.92 0.92 0.92 0.92 0.94 0.94 0.94Heavy Vehicles (%) 5% 5% 5% 2% 2% 2% 3% 3% 3% 4% 4% 4%Lane Group Flow (vph) 0 618 0 0 0 0 0 266 29 212 1460 0Turn Type Split Split Free SplitProtected Phases 3 3 1 1 2 2Permitted Phases FreeMinimum Split (s) 26.0 26.0 26.0 26.0 28.0 28.0Total Split (s) 27.0 27.0 0.0 0.0 0.0 0.0 26.0 26.0 0.0 57.0 57.0 0.0Total Split (%) 24.5% 24.5% 0.0% 0.0% 0.0% 0.0% 23.6% 23.6% 0.0% 51.8% 51.8% 0.0%Maximum Green (s) 21.0 21.0 20.0 20.0 51.0 51.0Yellow Time (s) 4.0 4.0 4.0 4.0 4.0 4.0All-Red Time (s) 2.0 2.0 2.0 2.0 2.0 2.0Lead/Lag Lead Lead Lag LagLead-Lag Optimize? Yes Yes Yes Yesv/c Ratio 0.91 0.40 0.02 0.26 0.95Control Delay 59.8 41.1 0.0 18.5 41.7Queue Delay 0.0 0.0 0.0 0.0 0.0Total Delay 59.8 41.1 0.0 18.5 41.7Queue Length 50th (ft) 217 87 0 87 500Queue Length 95th (ft) #323 128 0 139 #671Internal Link Dist (ft) 1429 815 810 432Turn Bay Length (ft)Base Capacity (vph) 681 663 1672 821 1539Starvation Cap Reductn 0 0 0 0 0Spillback Cap Reductn 0 0 0 0 0Storage Cap Reductn 0 0 0 0 0Reduced v/c Ratio 0.91 0.40 0.02 0.26 0.95

    Intersection SummaryArea Type: OtherCycle Length: 110Actuated Cycle Length: 110Offset: 0 (0%), Referenced to phase 2:SBTL, Start of GreenNatural Cycle: 100Control Type: Pretimed# 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles.

    Splits and Phases: 25: Somerville Ave & McGrath Hwy

    Green Line Extension 2030 No Build Condition Bus Alt - AM Peak25: Somerville Ave & McGrath Hwy Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. HCM Signalized Intersection Capacity Analysis

    Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBRLane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1800 1800Lane Width 12 12 12 12 12 12 12 12 14 12 12 12Total Lost time (s) 5.0 5.0 5.0 5.0 5.0Lane Util. Factor 0.95 0.95 1.00 1.00 0.95Frt 0.97 1.00 0.85 1.00 0.98Flt Protected 0.99 0.99 1.00 0.95 1.00Satd. Flow (prot) 3305 3473 1672 1736 3238Flt Permitted 0.99 0.99 1.00 0.95 1.00Satd. Flow (perm) 3305 3473 1672 1736 3238Volume (vph) 99 359 117 0 0 0 45 200 27 199 1233 139Peak-hour factor, PHF 0.93 0.93 0.93 0.92 0.92 0.92 0.92 0.92 0.92 0.94 0.94 0.94Adj. Flow (vph) 106 386 126 0 0 0 49 217 29 212 1312 148RTOR Reduction (vph) 0 21 0 0 0 0 0 0 0 0 8 0Lane Group Flow (vph) 0 597 0 0 0 0 0 266 29 212 1452 0Heavy Vehicles (%) 5% 5% 5% 2% 2% 2% 3% 3% 3% 4% 4% 4%Turn Type Split Split Free SplitProtected Phases 3 3 1 1 2 2Permitted Phases FreeActuated Green, G (s) 21.0 20.0 110.0 51.0 51.0Effective Green, g (s) 22.0 21.0 110.0 52.0 52.0Actuated g/C Ratio 0.20 0.19 1.00 0.47 0.47Clearance Time (s) 6.0 6.0 6.0 6.0Lane Grp Cap (vph) 661 663 1672 821 1531v/s Ratio Prot c0.18 c0.08 0.12 c0.45v/s Ratio Perm 0.02v/c Ratio 0.90 0.40 0.02 0.26 0.95Uniform Delay, d1 43.0 39.0 0.0 17.4 27.7Progression Factor 1.00 1.00 1.00 1.00 1.00Incremental Delay, d2 18.0 1.8 0.0 0.8 13.6Delay (s) 61.0 40.8 0.0 18.2 41.3Level of Service E D A B DApproach Delay (s) 61.0 0.0 36.8 38.4Approach LOS E A D D

    Intersection SummaryHCM Average Control Delay 43.6 HCM Level of Service DHCM Volume to Capacity ratio 0.82Actuated Cycle Length (s) 110.0 Sum of lost time (s) 15.0Intersection Capacity Utilization 86.5% ICU Level of Service EAnalysis Period (min) 15c Critical Lane Group

  • Green Line Extension 2030 No Build Condition Bus Alt - AM Peak26: Highland Ave & Lowell St Default

    B:\10303.00\tech\Synchro\EA\2030 No-Build\No-Build Bus\optimize\coordination\2030 Build Bus - AM.sy7 10/29/2008VHB, Inc. Lanes, Volumes, Timings

    Lane Group EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR 2Lane ConfigurationsIdeal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900Grade (%) 0% 0% 0% 1%Total Lost Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0Leading Detector (ft) 50 50 50 50 50 50 50Trailing Detector (ft) 0 0 0 0 0 0 0Turning Speed (mph) 15 9 15 9 15 9 15 9Right Turn on Red Yes No No YesLink Speed (mph) 30 30 30 30Link Distance (ft) 1198 1413 1810 2545Travel Time (s) 27.2 32.1 41.1 57.8Volume (vph) 30 389 0 0 455 27 25 69 40 173 0 144Peak Hour Factor 0.86 0.86 0.86 0.76 0.76 0.76 0.71 0.71 0.71 0.94 0.94 0.94Heavy Vehicles (%) 4% 4% 4% 4% 4% 4% 2% 2% 2% 2% 2% 2%Lane Group Flow (vph) 0 487 0 0 635 0 0 188 0 0 337 0Turn Type Perm Perm PermProtected Phases 1 1 3 3 2Permitted Phases 1 3 3Detector Phases 1 1 1 3 3 3 3Minimum Initial (s) 8.0 8.0 8.0 6.0 6.0 6.0 6.0 4.0Minimum Split (s) 13.0 13.0 13.0 10.0 10.0 10.0 10.0 8.0Total Split (s) 28.0 28.0 0.0 0.0 28.0 0.0 22.0 22.0 0.0 22.0 22.0 0.0 8.0Total Split (%) 48.3% 48.3% 0.0% 0.0% 48.3% 0.0% 37.9% 37.9% 0.0% 37.9% 37.9% 0.0% 14%Maximum Green (s) 23.0 23.0 23.0 18.0 18.0 18.0 18.0 6.0Yellow Time (s) 4.0 4.0 4.0 3.0 3.0 3.0 3.0 2.0All-Red Time (s) 1.0 1.