Office of Traffic, Safety, and Technology

Only about 10% of the system

8% of total crashes

17% of total severe crashes (K+A)

Rural22,630 – 62%1,626 – 83%

Urban14,086 – 38%

337 – 17%

All Way Stop445 – 6%

5 – 3%

Run off Road7,891 – 67%675 – 65%

Thru-Stop2,697 – 37%

65 – 45%

Signalized2,308 – 31%

32 – 22%

Inters-Related5,487 – 29%463 – 30%

Source: MnCMAT Crash Data, 2006-2010Severe is fatal and serious injury crashes (K+A).

Animal4,009 – 18%

60 – 4%

Not Inters-Related11,849 – 64%1,042 –66%

Head On, SS Opp.751 – 6%

132 – 13%

Unknown/Other1,276 – 7%

61 – 4%

Thru-Stop2,511 – 46%216 – 47%

Other/Unknown2,600 – 47%228 – 49%

Not Animal18,616 – 82%1,566 – 96%

All Way Stop164 – 3%15 – 3%

Signalized209 – 4%4 – 1%

-ATP’s 1, 2, 3, 4, 6, 7, and 8 – NO Metro5 Year Crashes156,182

4,902

State System70,808 – 45%2,000 – 41%

CSAH/CR36,716 – 24%1,963 – 40%

Rural22,630 – 62%1,626 – 83%

Urban14,086 – 38%

337 – 17%

All Way Stop445 – 6%

5 – 3%

Run off Road7,891 – 67%675 – 65%

On Curve3,222 – 40%339 – 50%

ExampleAll – %

Severe – %

Thru-Stop2,697 – 37%

65 – 45%

Signalized2,308 – 31%

32 – 22%

City, Twnshp, Other48,658 – 31%

939 – 19%

Inters-Related7,332 – 52%145 – 43%

Not Inters-Related5,177 – 37%175 – 52%

Run Off Road – 1,202 (23%), 69 (39%) Head On – 366 (7%), 27 (15%)“Other” – 540 (10%), 25 (14%)Rear End – 1,336 (26%), 17 (10%)

Head On, SS Opp.751 – 6%

132 – 13%

On Curve247 – 33%46 – 35%

Unknown/Other1,577 – 11%

17 – 5%

Other/Unknown1,881 – 26%

43 – 30%

Thru-Stop2,511 – 46%216 – 47%

Run Off Road – 999 (38%), 95 (42%) Right Angle – 268 (10%), 39 (17%)“Other” – 303 (12%), 29 (13%)Head On – 112 (4%), 21 (9%)

All Way Stop164 – 3%15 – 3%

- 21% of rural severe crashes

- AND 50% of Run off the Road

Basically; 10% of the system has 50% of theSevere Run off the Road Crashes

- A comprehensive plan of all 87 counties

- Looks at characteristics of severe crashes

- Segments, Intersections, and Curves

ATP Curves Intersections Segments (miles) Severe Crashes

1 3,740 2,588 3,266 2732 1,293 2,329 6,548 1643 4,297 2,592 5,042 7294 2,494 2,316 3,425 2066 3,835 1,544 2,632 4937 1,755 2,377 3,905 2658 1,170 1,862 3,104 233

Total 18,584 15,608 27,922 2,363

K A B C PDO13 MNTH 25 124+00.100 2,200 0 1 0 1 2 700 1,050 Yes Yes - xxxxx16 MNTH 47 054+00.650 2,150 0 1 0 0 0 1,400 1,025 Yes Yes - xxxxx4 USTH 71 158+00.400 2,450 1,400 675 Yes Yes - xxxx13 MNTH 25 112+00.100 1,750 1,150 1,700 Yes Yes - xxxx13 MNTH 25 123+00.150 2,200 0 0 1 0 3 750 950 Yes Yes Yes xxxx14 MNTH 27 094+00.900 1,525 1,450 1,200 Yes Yes - xxxx15 MNTH 28 105+00.100 2,000 0 0 0 0 1 750 400 Yes Yes - xxxx16 MNTH 47 054+00.200 2,150 1,900 1,075 Yes Yes - xxxx16 MNTH 47 115+00.700 1,100 1,950 1,500 Yes Yes - xxxx16 MNTH 47 118+00.100 1,100 0 1 0 0 1 1,900 1,850 Yes - - xxxx16 MNTH 47 119+00.550 1,100 1,950 1,450 Yes Yes - xxxx18 MNTH 64 013+00.800 1,450 0 0 0 0 3 1,900 2,775 Yes Yes - xxxx18 MNTH 64 015+00.750 1,450 0 0 0 1 1 1,900 2,900 Yes Yes - xxxx18 MNTH 64 034+00.700 1,450 1,900 2,850 Yes Yes - xxxx30 MNTH 238 013+00.050 1,000 750 1,000 Yes Yes - xxxx32 MNTH 287 000+00.780 1,200 0 0 0 1 0 750 1,075 Yes Yes - xxxx32 MNTH 287 007+00.250 1,000 1,450 2,250 Yes Yes - xxxx32 MNTH 287 013+00.600 1,000 0 0 1 0 0 850 525 Yes Yes - xxxx4 USTH 71 148+00.800 2,450 1,900 1,325 Yes - - xxx4 USTH 71 157+00.900 2,450 0 0 0 0 1 1,400 775 Yes - - xxx4 USTH 71 208+00.300 2,050 1,450 825 Yes - - xxx4 USTH 71 217+00.300 2,510 1,450 1,125 Yes Yes - xxx7 MNTH 6 032+00.650 2,950 1,800 700 Yes Yes - xxx7 MNTH 6 042+00.150 1,350 0 0 0 1 0 1,600 575 Yes - - xxx7 MNTH 6 047+00.600 1,350 0 0 0 1 0 2,900 1,350 Yes Yes - xxx7 MNTH 6 048+00.750 1,650 0 0 0 0 1 1,950 875 Yes - - xxx7 MNTH 6 049+00.750 1,650 1,900 1,200 Yes - - xxx7 MNTH 6 049+00.900 1,650 1,750 550 Yes - - xxx7 MNTH 6 074+00.750 500 850 1,125 Yes Yes - xxx8 MNTH 15 139+00.850 7,800 0 0 1 1 2 1,900 1,050 Yes Yes - xxx9 MNTH 18 016+00.600 6,600 1 0 1 4 2 1,650 1,600 Yes - - xxx9 MNTH 18 038+00 200 950 0 0 2 0 1 1 150 975 Yes Yes - xxx

Corridor Segment CurveRef Point

CorridorWeighted

LengthCurveRadiusCurve RD Crashes Rank

No Crashes

ChevronsVisualTrap

Intersectionon Curve

No Crashes

No Crashes

No Crashes

No CrashesNo Crashes

No CrashesNo CrashesNo Crashes

No Crashes

No Crashes

No CrashesNo Crashes

No Crashes

No CrashesNo Crashes

- Identify Characteristics of severe crashes

- Not Causation

- 5 risk factors were used

18%

7%

5%

9%11%

8%

5% 6%

4%3% 3%

2% 1% 2% 2% 2%

12%

6%

8%

0%

18% 18%

4%

8%

4%

2% 2%

10%

0%

2%

0%

2%

4%

14%

0%

2%

4%

6%

8%

10%

12%

14%

16%

18%

20%

Radius

Curves (1,888) Severe Crashes (51 total)

18%

29%

18%

10% 9%

15%

8%

24%

20%

10%

16%

24%

0%

5%

10%

15%

20%

25%

30%

35%

0<200 200<400 400<600 600<800 800<1000 1000+ADT

Curves (1,885) Severe Crashes (51 total)

If a curve had experienced a severe crash over the five-year study period, it received a star.

Curve Risk Criteria

0.07

0.10

0.080.08

0.09

0.06 0.070.06 0.06 0.06

0.00

0.02

0.04

0.06

0.08

0.10

0.12

RR Crosing Development Skew On/Near Curve Greater than 5 mi. toPrevious Stop

Cra

shes

per

Inte

rsec

tion

Intersection Risk Factors

Risk factor was present

Risk factor was not present

Intersection Risk Criteria

- Chevrons and Warning Signs ~$3,000 per curve

- Shoulder Paving~$37,000 / mile

- Rumble Strips~$3,000 / mile

- 1,000 AADT

- Chevrons and Warning Signs 20-40+% reduction in all crashes~$3,000 per curve

- Realignment~5% reduction per degree flattened~$100,000 - $1,000,000+ per curve

Three ways for a Curve to receive a project:

High Priority Curvesand those in close proximity

Curves w/ Existing Chevrons

All Curves on Roadways*

High Priority Segments & Critical Curve Radius

PROJECT:

Install/upgrade Chevrons+2’ Shoulder Paving+Rumble Strip

1,250’ radius (approximate)