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PHASE IV REVIEW MEETING----
CURVESSeptember 24, 2012
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Curve Summary
CountyCurve Count
Total Crashes
Severe Crashes
Fatal ROR
'A' ROR
Beltrami 354 66 6 1 4Clearwater 149 19 5 1 3Hubbard 300 34 4 1 0Kittson 43 0 0 0 0Lake of the Woods 30 4 0 0 0Marshall 55 4 1 0 0Norman 37 7 3 2 1Pennington 37 4 0 0 0Polk 163 26 7 3 0Red Lake 41 2 0 0 0Roseau 84 5 1 0 1Total 1,293 171 27 8 9
ATPCurve Count
Total Crashes
Severe Crashes
Fatal ROR
'A' ROR
1 3,740 416 32 9 152 1,293 171 27 8 93 4,297 1267 141 42 474 2,494 501 51 14 185 293 151 9 0 56 3,835 980 105 18 557 1,755 499 48 10 288 1,170 331 32 12 14
Total 18,877 4316 445 113 191
Chisago
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ATP 2 – Curve Radius
0%
5%
10%
15%
20%
25%
30%
Perc
enta
ge
Radius (ft)
ATP 2 Rural Paved Curves -- Radius
Total Crashes (171 total) Severe Crashes (27 total) Severe ROR (17 total) Curves (1,293)
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Greater MN – Curve Radius
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
Perc
enta
ge
Curve Radius (ft.)
Phase I-IV Curves - Rural Paved Roads
Total Crashes (4282) Severe Crashes (445) Severe ROR (304) # Curves (18608)
Not including the portions of the Metro Counties designated as rural.
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Phase I – Curve Radius
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
20%
Prop
ortio
n
Curve Radius (ft.)
Phase I Curves - Rural Paved Roads
Total Crashes (2195) Severe Crashes (243) Severe ROR (161) # Curves (7940)
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Phase II – Curve Radius
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
20%
Perc
enta
ge
Curve Radius (ft.)
Phase II Curves - Rural Paved Roads
Total Crashes (832) Severe Crashes (83) Severe ROR (58) # Curves (3451)
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Phase III – Curve Radius
0%
2%
4%
6%
8%
10%
12%
14%
16%
Perc
enta
ge
Curve Radius (ft.)
Phase III Curves - Rural Paved Roads
Total Crashes (1084) Severe Crashes (92) Severe ROR (68) # Curves (5924)
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Phase IV – Curve Radius
0%
5%
10%
15%
20%
25%
Perc
enta
ge
Curve Radius (ft.)
Phase IV Curves - Rural Paved Roads
Total Crashes (171) Severe Crashes (27) Severe ROR (17) # Curves (1293)
Not including the portions of the Metro Counties designated as rural.
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ATP 2 – Curve ADT
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
Perc
enta
ge
ADT
ATP 2 Rural Paved Curves -- ADT
Total Crashes (168 total) Severe Crashes (26 total) Severe ROR (16 total) Curves (1,283)
?
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Greater MN – Curve ADT
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
20%
Perc
enta
ge
ADT
Phase I-IV Curves - Rural Paved Roads
Total Crashes (4311) Severe Crashes (444) Severe ROR (303) # Curves (18789)
Not including the portions of the Metro Counties designated as rural.
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Phase I – Curve ADT
0%
5%
10%
15%
20%
25%
Perc
enta
ge
ADT
Phase I Curves - Rural Paved Roads
Total Crashes (2228) Severe Crashes (243) Severe ROR (161) # Curves (7934)
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Phase II – Curve ADT
0%
5%
10%
15%
20%
25%
Perc
enta
ge
ADT
Phase II Curves - Rural Paved Roads
Total Crashes (832) Severe Crashes (83) Severe ROR (58) # Curves (3658)
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Phase III – Curve ADT
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
Perc
enta
ge
ADT
Phase III Curves - Rural Paved Roads
Total Crashes (1083) Severe Crashes (92) Severe ROR (68) # Curves (5912)
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Phase IV – Curve ADT
0%
5%
10%
15%
20%
25%
30%
35%
Perc
enta
ge
ADT
Phase IV Curves - Rural Paved Roads
Total Crashes (168) Severe Crashes (26) Severe ROR (16) # Curves (1285)
Not including the portions of the Metro Counties designated as rural.
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Curve Critical Ranges
Phase ATP
Critical Curve Radius
Critical Curve ADT
Phase I ATP 3 County Specific
County SpecificATP 6
Phase II
ATP 4 500 – 1200 200 – 600ATP 8 500 – 1200 400 –
1400
Phase III
ATP 1 + Chisago
500 – 1200 200 – 1000+
ATP 7 + Steele
500 – 1200 200 – 1000
Phase IV
ATP 2* 500 – 1200 200 – 800ATP Metro Not
AvailableNot
Available
+ Critical Curve ADT for Chisago County was 1900 – 3000.* Currently suggested critical ranges.