159th WideningMetcalf to NallCommunity Response to Current Proposal

Current City PlansConflict PointsCommunity ConcernsSafety PerformanceCommunity Goals

Plan

Estimations• 12,000 vehicles per day along 159th

• 1,467 students 2013-14• 150 cars through school drop off• 900 cars within school parking lot

• School start/end estimated to run 20-30 minutes each

159th and 69 Highway• 159th / 69 Highway interchange

Estimated 4,000 additional vehicles Approx. 2,000 along 159th between Metcalf and Nall

• Getting entrance/exit ramps Both directions This fall

Not Enough Traffic for Light• Traffic from school will NEVER be high enough to justify a traffic

light What about the new ball fields being added?

• What is the traffic level to be considered?• How are older areas in town justified?• Are there other options to fund it?

Through the school? Through the county? Offset from taking out the traffic circles?

School Expansion• Adding additional fields• Do we know what the new drop off loop will look like? When?

Current – Santa Fe and Conser• One lane 3 way intersection roundabout

Current – 110th & Lamar• Two lane 4 way intersection roundabout – multilane turning

Current – 133rd & Lamar• Single lane 4 way intersection roundabout

Current – Olathe Bass Pro• 2 Lane 4 way intersection

Current – St James Academy• Multiple-lane center turning – multiple roundabouts around a

school. • Total of 7 roundabouts along main road

Current City PlansConflict PointsCommunity ConcernsSafety PerformanceCommunity Goals

Conflict Point• Any path where two vehicles must cross paths and a potential

collision could occur

Merging – two cars joining paths

Diverging – one car leaving the path (turning)

Crossing – one car must cross the direct path of another car

4-Way Intersection Conflict Points• 32 points of conflict

4 Path Roundabout Conflict Points• 8 Points of conflict

Statistically Speaking•Single Lane 4 Path Roundabout8 points of conflict•Single Lane 4 way intersection 32 points of conflict•However that’s not what we are dealing with in this situation!!

3-Way Intersection Conflict Points• 9 Points of conflict

3 Path Roundabout Conflict Points• 6 Points of conflict

Statistically Speaking•Single Lane 3 Path Roundabout6 points of conflict•Single Lane 3 way intersection 9 points of conflict•However STILL not what we are dealing with in this situation!!

Planed Roundabouts (2 Lane – Inner circle)• 20 Points

of conflict

Alternate Stoplight / Median• 11 Points

Statistically Speaking•Multilane 3 Path Roundabout with middle lane looping20 points of conflict

•Multilane 3 way intersection 11 points of conflict

•Reduction in points of conflict!!

Current Route (Today)• Metcalf & 159th – 4 Way – 36 Points• Riggs/Lamar & 159th – 4 Way – 32 Points• Horton & 159th – 3 Way – 9 Points• West End School – 3 Way – 9 Points• Middle of School – 3 Way – 9 Points• School Drop Off Loop – 3 Way Entrance – 5 Points• School Drop Off Loop – 3 Way Exit – 9 Points• Woodson & 159th – 3 Way – 9 Points• Outlook & 159th – 3 Way – 9 Points• Nall & 159th – 4 Way – 32 Points

159 Points Total

City Proposal• Metcalf & 159th – 4 Way – 2 Lane – 36 Points - U-TURN ENCOURAGED + 3• Riggs/Lamar & 159th – 4 Way – 2 Lane – 36 Points• Horton & 159th – 3 Way – 3 Points – NO LEFT TURN EAST BOUND• West End School – Roundabout – 20 Points• Middle of School – 3 Way – 3 Points – NO LEFT TURN WEST BOUND• School Drop Off Loop – 3 Way Entrance – 5 Points• School Drop Off Loop – Roundabout – 20 Points• Woodson & 159th – 3 Way – 3 Points – NO LEFT TURN EAST BOUND• Outlook & 159th – 3 Way – 3 Points – NO LEFT TURN WEST BOUND• Nall & 159th – 4 Way – 2 Lane – 36 Points – U-TURN ENCOURAGED + 3

171 Points Total

Current City PlansConflict PointsCommunity ConcernsSafety PerformanceCommunity Goals

Student Crossings Concern• “Roundabouts statistically safer”• Traffic light crosswalks perceived safer

• Foot traffic at increased levels at the same time of increased traffic levels Will increase difficulty for pedestrians

• Visually Impaired (ADA) Harder to determine gap in traffic to cross

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Increased Speed Limit• Increasing speed from 35 to 45 increases the probability of

fatal pedestrian accidents* Several people and bicycles cross at Riggs/Lamar

• Reduce speed during school hours Like other school zones

Reduced Neighborhood Entry/Exit• Proposed plan – lose access at

Horton Woodson Outlook

• Sylvan Lakes (Woodson) Lose full use of primary subdivision access How will this affect home values? Need a full assessment

Encourage Roundabout and U-Turns• Due to limited access to neighborhoods• Increase traffic through roundabouts• Adds additional collision points through Nall and Metcalf for U-

Turns

Increases Neighborhood Traffic• Due to limited neighborhood access• Increase traffic / decrease safety on neighborhood streets• School buses will be routed through neighborhoods

Increased Emergency Response• Due to two factors

Moving fire station to 163rd and Antioch Average roundabout slows Emergency vehicle 4 to 12 seconds

• Horton and Woodson are no longer able to turn from the direction of emergency services Increases response time through roundabouts AND making a U-

Turn/Roundabout turn to return back Seconds and Minutes count here

Favors School Traffic• Roundabouts are designed to merge equal traffic from all

directions• School traffic is not equal to 159th street traffic• School traffic will have two increases per day and special

events• What about normal traffic during weekends and summer?

City Representative – No Left Turn• Representative mentioned no left turn if not a 4 way

intersection• Why is the high school provided with a left turn? – estimated to

be 150 cars entering here. Traffic projection justified it• Should they be using the roundabouts? Elementary school

traffic “is at a different time” and should use the roundabouts

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Costs• Roundabouts are more expensive to install• Traffic lights are more expensive over 30 year maintenance

plan• Roundabouts are more expensive for inclement weather

maintenance

• Overall – it’s close to a wash when factoring all issues

• Bigger questions What is the life expectancy of these roundabouts? Will snow plows cause damage due to difficult entry? What about damage from work vehicles with trailers?

Design Concerns• Not enough right of way to build centered• Slight left in both directions before entering to the right

Complex entry Forces traffic to slow down How will this affect larger vehicles and lane crossings?

Curb Size / Closeness• How close with the actual street and sidewalk be to the houses

along 159th?• Will the curb height prevent cars from entering yard/houses?• What about a small berm with leftover dirt?• What do the homeowners think?

Current City PlansConflict PointsCommunity ConcernsSafety PerformanceCommunity Goals

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4 Way Intersection Math• According to The Record for 2006 through 2010*

• Comparing 4 way roundabout to 4 way intersection provides about the same number of injury accidents per year

4 Way Roundabout 4 Way IntersectionCollisions / 1 mil vehicles

1.56 0.61

Major Injury / Death 9.0% 27.1%Average Collisions / Year 9.5 3.4Injury Accidents / Year 0.8550 (9.5 * 9.0%) 0.9214 (3.4 * 27.1%)

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Safety Performance“In general, roundabouts have improved both overall crash rates, and particularly, injury crash rates in a wide range of settings (urban, suburban, and rural) for all previous forms of traffic control except for all-way stop control, for which no statistically significant difference could be found. In addition, single-lane roundabouts have better safety performance than multilane roundabouts. The safety performance of multilane roundabouts appears to be especially sensitive to design details.” *

Traffic Accidents• 159th Metcalf to Nall Accident Type Count

Angle 14Backed into 1Fixed object 4Head on 1Other 2Rear end 33Sideswipe overtaking 1Grand Total 56

Traffic Accidents• Blue Valley North

Accident Type CountAngle 8Fixed object 2Left turn opposing 1Rear end 2Sideswipe overtaking 1Grand Total 14

Traffic Accidents• Blue Valley Northwest

Accident Type CountAngle 19Backed into 1Fixed object 7Left turn opposing 20Other 2Rear end 42Sideswipe overtaking 16Grand Total 107

Traffic Accidents• Blue Valley Southwest

Accident Type CountAngle 5Fixed object 2Rear end 1Sideswipe opp 1Grand Total 9

Traffic Accidents• Blue Valley West

Accident Type CountAngle 14Animal/Deer 1Backed into 1Fixed object 3Rear end 21Sideswipe opp 1Sideswipe overtaking 4Grand Total 45

Traffic Accidents

Accident Type CountFixed object 7Rear end 2Sideswipe overtaking 2Grand Total 11

• Santa Fe Roundabout – one lane – 3 entrances

Traffic Accidents• 110th and Lamar - Convention Center – Multi-lane

Activity Type CountBicycle 1Fixed object 2Loss of control 1Rear end 3Sideswipe overtaking 22Grand Total 29

Traffic Accidents• 133rd and Lamar

Accident Type CountHead on 1Rear end 2Sideswipe overtaking 1Grand Total 4

Traffic Accidents

Row Labels

133rd &

Lamar

159th Corrid

or (Metcalf to Nall)

Blue Valley North

Blue Valley Northwest

(135th and Switz

er)

Blue Valley Southwest

(Quivira)

Blue Valley West

(Antioch)

Conventio

n Cente

r

Downtown

OP (Sante Fe)

Grand

TotalAngle 14 8 19 5 14 60Animal/Deer 1 1Backed into 1 1 1 3Bicycle 1 1Fixed object 4 2 7 2 3 2 7 27Head on 1 1 2Left turn opposing 1 20 21Loss of control 1 1Other 2 2 4

Rear end 2 33 2 42 1 21 3 2106

Sideswipe opp 1 1 2Sideswipe overtaking 1 1 1 16 4 22 2 47

Grand Total 4 56 14107 9 45 29 11

275

Traffic Accidents• All of Overland Park Accident Type Count

Angle 3,045Animal/Deer 336Backed into 395Bicycle 89Fixed object 3,477Head on 91Left turn opposing 1,589Loss of control 262Other 470Pedestrian 92

Rear end10,36

3Report Data incomplete 3Sideswipe opp 108Sideswipe overtaking 2,641Unknown 1

Grand Total22,96

2

Current City PlansConflict PointsCommunity ConcernsSafety PerformanceCommunity Goals

Community Proposal Goals• Keep access to communities open • Keep 159th traffic moving even when school is not in session

Do not give priority to school traffic unless actual traffic counts justify it

• Traffic circles are designed to slow traffic along 159th

• Also provides ability for school traffic to enter/exit

•But at what cost to the neighborhood traffic??

Community Plan

Community Plan• East Bound

North Turn Lanes Lamar Horton Woodson

South Turn Lanes West Side School Parking Parent Drop Off Loop

• West Bound South Turn Lanes

Outlook East Side School Parent Drop Off Loop West Side School Parking Riggs

• Two Way Traffic Sensing Light Priority to 159th

West Side School Parking East Side Parent Loop Exit

Similar to Intersection Below• Barstow and Stateline – flashes yellow for Stateline traffic

during normal hours

Community Proposal• Metcalf & 159th – 4 Way – 2 Lane – 36 Points• Riggs/Lamar & 159th – 4 Way – 2 Lane – 36 Points• Horton & 159th – 3 Way – 11 Points• West End School – 3 Way – 11 Points• Middle of School – 3 Way – 3 Points – NO LEFT TURN WEST BOUND• School Drop Off Loop – 3 Way Entrance – 5 Points• School Drop Off Loop – 3 Way – 11 Points• Woodson & 159th – 3 Way – 11 Points• Outlook & 159th – 3 Way – 11 Points• Nall & 159th – 4 Way – 2 Lane – 36 Points

171 Points Total

City Proposal Review• Metcalf & 159th – 4 Way – 2 Lane – 36 Points - U-TURN ENCOURAGED + 3• Riggs/Lamar & 159th – 4 Way – 2 Lane – 36 Points• Horton & 159th – 3 Way – 3 Points – NO LEFT TURN EAST BOUND• West End School – Roundabout – 20 Points• Middle of School – 3 Way – 3 Points – NO LEFT TURN WEST BOUND• School Drop Off Loop – 3 Way Entrance – 5 Points• School Drop Off Loop – Roundabout – 20 Points• Woodson & 159th – 3 Way – 3 Points – NO LEFT TURN EAST BOUND• Outlook & 159th – 3 Way – 3 Points – NO LEFT TURN WEST BOUND• Nall & 159th – 4 Way – 2 Lane – 36 Points – U-TURN ENCOURAGED + 3

171 Points Total

Call To Action

Next Steps• Continue to spread the word around our community

Fliers Door to door Facebook Petition

• Talked with Brian and got some answers. Prepare a more formal list of questions.

• Send people to city council meeting – open to the public just can’t speak

• Attend in a unified front at the next public meeting• Stop work lawsuits (if necessary)

Due to property valuation of loss of access