CRASH MODIFICATION FACTORS CLEARINGHOUSE

Study Details

Study Title: NCHRP Report 641: Guidance for the Design and Application of Shoulder and Centerline Rumble Strips

Authors: Torbic et al.

Publication Date: 2009

Abstract: This NCHRP Report 641 provides guidance for the design and application of shoulder and centerline rumble strips as an effective crash reduction measure, while minimizing adverse effects for motorcyclists, bicyclists, and nearby residents. Using the results of previous studies and the research conducted under this project, safety effectiveness estimates were developed for shoulder rumble strips on rural freeways and rural two-lane roads and for centerline rumble strips on rural and urban two-lane roads. The report will be of particular interest to safety practitioners with responsibility for roadway design.

Study Citation: Torbic, D. J., Hutton, J. M., Bokenkroger, C. D., Bauer, K. M., Harwood, D. W., Gilmore, D. K., Dunn, D. K., Ronchetto, J. J., Donnell, E. T., Sommer III, H. J., Garvey, P., Persaud, B., and Lyon, C. NCHRP Report 641: Guidance for the Design and Application of Shoulder and Centerline Rumble Strips, Transportation Research Board, Washington D.C., (2009).

Study Report: Download the Study Report Document

CMFs Associated With This Study

Category: Roadway

Countermeasure: Install centerline rumble strips

CMF	CRF(%)	Quality	Crash Type	Crash Severity	Roadway Type	Area Type
1.02	-2		All	All	Not Specified	Urban

0.89

11

All

All

Not Specified

Rural

0.98

2

All

All

Not Specified

Rural

1.02

-2

All

All

Not Specified

Rural

0.96

4

All

All

Not Specified

Rural

0.91

9

All

K,A,B,C

Not Specified

Urban

0.78

22

All

K,A,B,C

Not Specified

Rural

0.94

6

All

K,A,B,C

Not Specified

Rural

1.04

-4

All

K,A,B,C

Not Specified

Rural

0.91

9

All

K,A,B,C

Not Specified

Rural

0.6

40

Head on,Sideswipe

All

Not Specified

Urban

0.51

49

Head on,Sideswipe

All

Not Specified

Rural

0.74

26

Head on,Sideswipe

All

Not Specified

Rural

0.65

35

Head on,Sideswipe

All

Not Specified

Rural

0.63

37

Head on,Sideswipe

All

Not Specified

Rural

0.36

64

Head on,Sideswipe

K,A,B,C

Not Specified

Urban

0.55

45

Head on,Sideswipe

K,A,B,C

Not Specified

Rural

0.56

44

Head on,Sideswipe

K,A,B,C

Not Specified

Rural

0.65

35

Head on,Sideswipe

K,A,B,C

Not Specified

Rural

0.55

45

Head on,Sideswipe

K,A,B,C

Not Specified

Rural

0.91

9

All

All

Not Specified

Rural

0.88

12

All

K,A,B,C

Not Specified

Rural

0.7

30

Head on,Sideswipe

All

Not Specified

Rural

Countermeasure: Install centerline rumble strips on horizontal curves

CMF	CRF(%)	Quality	Crash Type	Crash Severity	Roadway Type	Area Type
0.83	17		All	All	Not Specified	Rural

1.16

-16

All

All

Not Specified

Rural

1.03

-3

All

All

Not Specified

Rural

1.04

-4

All

All

Not Specified

Rural

0.63

37

All

K,A,B,C

Not Specified

Rural

1.1

-10

All

K,A,B,C

Not Specified

Rural

0.79

21

All

K,A,B,C

Not Specified

Rural

0.94

6

All

K,A,B,C

Not Specified

Rural

0.48

52

Head on,Sideswipe

All

Not Specified

Rural

0.53

47

Head on,Sideswipe

All

Not Specified

Rural

1.46

-46

Head on,Sideswipe

All

Not Specified

Rural

0.53

47

Head on,Sideswipe

All

Not Specified

Rural

Countermeasure: Install centerline rumble strips on tangent sections

CMF	CRF(%)	Quality	Crash Type	Crash Severity	Roadway Type	Area Type
0.9	10		All	All	Not Specified	Rural

0.9

10

All

All

Not Specified

Rural

1.02

-2

All

All

Not Specified

Rural

0.92

8

All

All

Not Specified

Rural

0.82

18

All

K,A,B,C

Not Specified

Rural

0.78

22

All

K,A,B,C

Not Specified

Rural

1.1

-10

All

K,A,B,C

Not Specified

Rural

0.85

15

All

K,A,B,C

Not Specified

Rural

0.51

49

Head on,Sideswipe

All

Not Specified

Rural

0.57

43

Head on,Sideswipe

All

Not Specified

Rural

0.33

67

Head on,Sideswipe

All

Not Specified

Rural

0.51

49

Head on,Sideswipe

All

Not Specified

Rural

Countermeasure: Install edgeline rumble strips

CMF	CRF(%)	Quality	Crash Type	Crash Severity	Roadway Type	Area Type
0.71	29		Run off road	K,A,B,C	Principal Arterial Other Freeways and Expressways	Rural

0.75

25

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.75

25

Run off road

K,A,B,C

Not Specified

Rural

0.7

30

Run off road

K,A,B,C

Not Specified

Rural

0.58

42

Run off road

K,A,B,C

Not Specified

Rural

1.31

-31

Run off road

K,A,B,C

Not Specified

Rural

0.67

33

Run off road

K,A,B,C

Not Specified

Rural

1.08

-8

Run off road

K,A,B,C

Not Specified

Rural

0.61

39

Run off road

K,A,B,C

Not Specified

Rural

0.57

43

Run off road

K,A,B,C

Not Specified

Rural

0.86

14

Run off road

K,A,B,C

Not Specified

Countermeasure: Install edgeline rumble strips on roadways with a shoulder width less than 5 feet

CMF	CRF(%)	Quality	Crash Type	Crash Severity	Roadway Type	Area Type
0.96	4		Run off road	K,A,B,C	Not Specified	Rural

1.1

-10

Run off road

K,A,B,C

Not Specified

Rural

0.53

47

Run off road

K,A,B,C

Not Specified

Rural

1.27

-27

Run off road

K,A,B,C

Not Specified

Rural

Countermeasure: Install edgeline rumble strips on roadways with a shoulder width of 5 feet or greater

CMF	CRF(%)	Quality	Crash Type	Crash Severity	Roadway Type	Area Type
0.75	25		Run off road	K,A,B,C	Principal Arterial Other Freeways and Expressways	Rural

0.34

66

Run off road

K,A,B,C

Not Specified

Rural

0.7

30

Run off road

K,A,B,C

Not Specified

Rural

0.46

54

Run off road

K,A,B,C

Not Specified

Rural

0.52

48

Run off road

K,A,B,C

Not Specified

Rural

0.57

43

Run off road

K,A,B,C

Not Specified

Rural

1.11

-11

Run off road

K,A,B,C

Not Specified

Rural

Category:Shoulder treatments

Countermeasure: Install shoulder rumble strips

CMF	CRF(%)	Quality	Crash Type	Crash Severity	Roadway Type	Area Type
0.99	1		All	All	Principal Arterial Other Freeways and Expressways	Urban

1.07

-7

All

All

Principal Arterial Other Freeways and Expressways

Rural

1.08

-8

All

All

Principal Arterial Other Freeways and Expressways

Rural

1

0

All

All

Principal Arterial Other Freeways and Expressways

Rural

1.18

-18

All

All

Not Specified

Rural

1.1

-10

All

All

Not Specified

Rural

1.22

-22

All

All

Not Specified

Rural

0.87

13

All

All

Not Specified

Rural

1.06

-6

All

All

Not Specified

Rural

1.14

-14

All

All

Not Specified

Rural

1.4

-40

All

All

Not Specified

Rural

0.76

24

All

All

Not Specified

Rural

0.84

16

All

K,A,B,C

Principal Arterial Other Freeways and Expressways

Urban

0.93

7

All

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.94

6

All

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.87

13

All

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.9

10

All

K,A,B,C

Not Specified

Rural

0.78

22

All

K,A,B,C

Not Specified

Rural

0.95

5

All

K,A,B,C

Not Specified

Rural

0.6

40

All

K,A,B,C

Not Specified

Rural

0.92

8

All

K,A,B,C

Not Specified

Rural

1.05

-5

All

K,A,B,C

Not Specified

Rural

0.81

19

All

K,A,B,C

Not Specified

Rural

0.82

18

All

K,A,B,C

Not Specified

Rural

0.94

6

Run off road

All

Principal Arterial Other Freeways and Expressways

Urban

0.9

10

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

0.92

8

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

0.82

18

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

1.4

-40

Run off road

All

Not Specified

Rural

1.38

-38

Run off road

All

Not Specified

Rural

1.45

-45

Run off road

All

Not Specified

Rural

0.75

25

Run off road

All

Not Specified

Rural

0.84

16

Run off road

All

Not Specified

Rural

1.11

-11

Run off road

All

Not Specified

Rural

1.17

-17

Run off road

All

Not Specified

Rural

0.56

44

Run off road

All

Not Specified

Rural

0.93

7

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Urban

0.83

17

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.84

16

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.77

23

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.97

3

Run off road

K,A,B,C

Not Specified

Rural

0.9

10

Run off road

K,A,B,C

Not Specified

Rural

1

0

Run off road

K,A,B,C

Not Specified

Rural

0.8

20

Run off road

K,A,B,C

Not Specified

Rural

2.82

-182

Run off road,Truck related

All

Not Specified

Rural

2.39

-139

Run off road,Truck related

All

Not Specified

Rural

0.81

19

Run off road,Truck related

All

Not Specified

Rural

0.58

42

Run off road,Truck related

All

Principal Arterial Other Freeways and Expressways

Rural

0.59

41

Run off road,Truck related

All

Principal Arterial Other Freeways and Expressways

Rural

0.56

44

Run off road,Truck related

All

Principal Arterial Other Freeways and Expressways

Rural

0.54

46

Run off road,Truck related

All

Principal Arterial Other Freeways and Expressways

Rural

0.59

41

Run off road,Truck related

All

Principal Arterial Other Freeways and Expressways

Rural

0.56

44

Run off road,Truck related

All

Principal Arterial Other Freeways and Expressways

Rural

0.82

18

Run off road,Wet road

All

Principal Arterial Other Freeways and Expressways

Rural

0.77

23

Run off road,Wet road

All

Principal Arterial Other Freeways and Expressways

Rural

1.04

-4

Run off road,Wet road

All

Principal Arterial Other Freeways and Expressways

Rural

1.18

-18

Run off road,Wet road

All

Not Specified

Rural

1.5

-50

Run off road,Wet road

All

Not Specified

Rural

1.98

-98

Run off road,Wet road

All

Not Specified

Rural

0.7

30

Run off road,Wet road

All

Not Specified

Rural

0.89

11

Run off road,Wet road

All

Principal Arterial Other Freeways and Expressways

Rural

0.86

14

Run off road,Wet road

All

Principal Arterial Other Freeways and Expressways

Rural

1.03

-3

Run off road,Wet road

All

Principal Arterial Other Freeways and Expressways

Rural

1.05

-5

Run off road,Wet road

All

Not Specified

Rural

1.38

-38

Run off road,Wet road

All

Not Specified

Rural

2.35

-135

Run off road,Wet road

All

Not Specified

Rural

0.72

28

Run off road,Wet road

All

Not Specified

Rural

0.94

6

Run off road,Wet road

All

Principal Arterial Other Freeways and Expressways

Rural

0.85

15

Run off road,Wet road

All

Principal Arterial Other Freeways and Expressways

Rural

1.4

-40

Run off road,Wet road

All

Principal Arterial Other Freeways and Expressways

Rural

1.05

-5

Run off road,Wet road

All

Not Specified

Rural

1.75

-75

Run off road,Wet road

All

Not Specified

Rural

2.18

-118

Run off road,Wet road

All

Not Specified

Rural

0.72

28

Run off road,Wet road

All

Not Specified

Rural

0.73

27

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

0.74

26

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

0.67

33

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

0.89

11

Run off road

All

Not Specified

Rural

1.27

-27

Run off road

All

Not Specified

Rural

1.2

-20

Run off road

All

Not Specified

Rural

0.62

38

Run off road

All

Not Specified

Rural

0.77

23

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

0.82

18

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

0.72

28

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

0.76

24

Run off road

All

Not Specified

Rural

1.11

-11

Run off road

All

Not Specified

Rural

1.55

-55

Run off road

All

Not Specified

Rural

0.6

40

Run off road

All

Not Specified

Rural

0.78

22

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

0.79

21

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

0.7

30

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

0.7

30

Run off road

All

Not Specified

Rural

1.11

-11

Run off road

All

Not Specified

Rural

1.41

-41

Run off road

All

Not Specified

Rural

0.6

40

Run off road

All

Not Specified

Rural

1.28

-28

All

All

Not Specified

Rural

0.74

26

All

All

Not Specified

Rural

0.94

6

All

All

Not Specified

Rural

1.18

-18

All

All

Not Specified

Rural

0.85

15

All

All

Not Specified

Rural

0.76

24

All

All

Not Specified

Rural

0.8

20

All

K,A,B,C

Principal Arterial Other Freeways and Expressways

Urban

0.96

4

All

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.99

1

All

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.91

9

All

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

1.05

-5

All

K,A,B,C

Not Specified

Rural

0.82

18

All

K,A,B,C

Not Specified

Rural

1.02

-2

All

K,A,B,C

Not Specified

Rural

0.56

44

All

K,A,B,C

Not Specified

Rural

0.86

14

All

K,A,B,C

Not Specified

Rural

1.07

-7

All

K,A,B,C

Not Specified

Rural

0.65

35

All

K,A,B,C

Not Specified

Rural

0.84

16

All

K,A,B,C

Not Specified

Rural

0.9

10

Run off road

All

Principal Arterial Other Freeways and Expressways

Urban

0.9

10

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

0.94

6

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

0.87

13

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

1.66

-66

Run off road

All

Not Specified

Rural

1.34

-34

Run off road

All

Not Specified

Rural

1.67

-67

Run off road

All

Not Specified

Rural

0.77

23

Run off road

All

Not Specified

Rural

0.74

26

Run off road

All

Not Specified

Rural

1.12

-12

Run off road

All

Not Specified

Rural

0.94

6

Run off road

All

Not Specified

Rural

0.55

45

Run off road

All

Not Specified

Rural

0.9

10

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Urban

0.82

18

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.86

14

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.78

22

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

1.15

-15

Run off road

K,A,B,C

Not Specified

Rural

0.85

15

Run off road

K,A,B,C

Not Specified

Rural

1.12

-12

Run off road

K,A,B,C

Not Specified

Rural

0.78

22

Run off road

K,A,B,C

Not Specified

Rural

0.6

40

Run off road

K,A,B,C

Not Specified

Rural

0.77

23

Run off road

K,A,B,C

Not Specified

Rural

0.43

57

Run off road

K,A,B,C

Not Specified

Rural

0.63

37

Run off road

K,A,B,C

Not Specified

Rural

1.02

-2

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Urban

0.91

9

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.97

3

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

1.1

-10

Run off road

K,A,B,C

Not Specified

Rural

1.23

-23

Run off road

K,A,B,C

Not Specified

Rural

1.28

-28

Run off road

K,A,B,C

Not Specified

Rural

0.52

48

Run off road

K,A,B,C

Not Specified

Rural

0.53

47

Run off road

K,A,B,C

Not Specified

Rural

0.92

8

Run off road

K,A,B,C

Not Specified

Rural

0.58

42

Run off road

K,A,B,C

Not Specified

Rural

1.11

-11

Run off road

K,A,B,C

Not Specified

Rural

1

0

Run off road

K,A,B,C

Not Specified

0.58

42

Run off road,Truck related

All

Principal Arterial Other Freeways and Expressways

Rural

0.58

42

Run off road,Truck related

All

Principal Arterial Other Freeways and Expressways

Rural

0.59

41

Run off road,Truck related

All

Principal Arterial Other Freeways and Expressways

Rural

1.83

-83

Run off road,Truck related

All

Not Specified

Rural

0.64

36

Run off road

K,A,B,C

Not Specified

Rural

0.68

32

Run off road

K,A,B,C

Not Specified

Rural

0.55

45

Run off road

K,A,B,C

Not Specified

Rural

0.63

37

Run off road

K,A,B,C

Not Specified

Rural

0.96

4

All

All

Principal Arterial Other Freeways and Expressways

Urban

1.01

-1

All

All

Principal Arterial Other Freeways and Expressways

Rural

1.08

-8

All

All

Principal Arterial Other Freeways and Expressways

Rural

1.08

-8

All

All

Principal Arterial Other Freeways and Expressways

Rural

1.2

-20

All

All

Not Specified

Rural

1.16

-16

All

All

Not Specified

Rural

1.28

-28

All

All

Not Specified

Rural

0.81

19

All

All

Not Specified

Rural

0.86

14

All

All

Not Specified

Rural

0.96

4

All

All

Not Specified

Rural

0.83

17

All

All

Not Specified

Rural

0.76

24

All

All

Not Specified

Rural

0.91

9

All

K,A,B,C

Principal Arterial Other Freeways and Expressways

Urban

0.92

8

All

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.97

3

All

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.88

12

All

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

1.01

-1

All

K,A,B,C

Not Specified

Rural

1.07

-7

All

K,A,B,C

Not Specified

Rural

1.05

-5

All

K,A,B,C

Not Specified

Rural

0.58

42

All

K,A,B,C

Not Specified

Rural

0.72

28

All

K,A,B,C

Not Specified

Rural

0.87

13

All

K,A,B,C

Not Specified

Rural

0.6

40

All

K,A,B,C

Not Specified

Rural

0.84

16

All

K,A,B,C

Not Specified

Rural

0.96

4

Run off road

All

Principal Arterial Other Freeways and Expressways

Urban

0.9

10

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

0.93

7

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

0.98

2

Run off road

All

Principal Arterial Other Freeways and Expressways

Rural

1.41

-41

Run off road

All

Not Specified

Rural

1.39

-39

Run off road

All

Not Specified

Rural

1.7

-70

Run off road

All

Not Specified

Rural

0.77

23

Run off road

All

Not Specified

Rural

0.71

29

Run off road

All

Not Specified

Rural

1.19

-19

Run off road

All

Not Specified

Rural

0.91

9

Run off road

All

Not Specified

Rural

0.55

45

Run off road

All

Not Specified

Rural

1.02

-2

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Urban

0.86

14

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.88

12

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.87

13

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

1.05

-5

Run off road

K,A,B,C

Not Specified

Rural

1.12

-12

Run off road

K,A,B,C

Not Specified

Rural

1.19

-19

Run off road

K,A,B,C

Not Specified

Rural

0.67

33

Run off road

K,A,B,C

Not Specified

Rural

0.63

37

Run off road

K,A,B,C

Not Specified

Rural

1.04

-4

Run off road

K,A,B,C

Not Specified

Rural

0.41

59

Run off road

K,A,B,C

Not Specified

Rural

0.63

37

Run off road

K,A,B,C

Not Specified

Rural

0.95

5

All

All

Principal Arterial Other Freeways and Expressways

Urban

1.07

-7

All

All

Principal Arterial Other Freeways and Expressways

Rural

1.11

-11

All

All

Principal Arterial Other Freeways and Expressways

Rural

1.06

-6

All

All

Principal Arterial Other Freeways and Expressways

Rural

1.28

-28

All

All

Not Specified

Rural

1.17

-17

All

All

Not Specified

Rural

Countermeasure: Install shoulder rumble strips on roadways with a shoulder width equal to 5 feet

CMF	CRF(%)	Quality	Crash Type	Crash Severity	Roadway Type	Area Type
0.92	8		Run off road	K,A,B,C	Not Specified	Rural

0.68

32

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Urban

0.97

3

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.52

48

Run off road

K,A,B,C

Not Specified

Rural

1.23

-23

Run off road

K,A,B,C

Not Specified

Rural

1.41

-41

Run off road

K,A,B,C

Not Specified

Rural

0.22

78

Run off road

K,A,B,C

Not Specified

Rural

0.46

54

Run off road

K,A,B,C

Not Specified

Rural

Countermeasure: Install shoulder rumble strips on roadways with a shoulder width less than 5 feet

CMF	CRF(%)	Quality	Crash Type	Crash Severity	Roadway Type	Area Type
0.66	34		Run off road	K,A,B,C	Principal Arterial Other Freeways and Expressways	Urban

0.35

65

Run off road

K,A,B,C

Not Specified

Rural

1.21

-21

Run off road

K,A,B,C

Not Specified

Rural

Countermeasure: Install shoulder rumble strips with an offset of 0-8 inches relative to the edgeline

CMF	CRF(%)	Quality	Crash Type	Crash Severity	Roadway Type	Area Type
0.71	29		Run off road	K,A,B,C	Principal Arterial Other Freeways and Expressways	Rural

0.75

25

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.74

26

Run off road

K,A,B,C

Not Specified

Rural

0.71

29

Run off road

K,A,B,C

Not Specified

Rural

0.58

42

Run off road

K,A,B,C

Not Specified

Rural

0.67

33

Run off road

K,A,B,C

Not Specified

Rural

1.1

-10

Run off road

K,A,B,C

Not Specified

Rural

Countermeasure: Install shoulder rumble strips with an offset of 21+ inches relative to the edgeline

CMF	CRF(%)	Quality	Crash Type	Crash Severity	Roadway Type	Area Type
0.93	7		Run off road	K,A,B,C	Principal Arterial Other Freeways and Expressways	Rural

1.02

-2

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

1.16

-16

Run off road

K,A,B,C

Not Specified

Rural

0.74

26

Run off road

K,A,B,C

Not Specified

Rural

1.28

-28

Run off road

K,A,B,C

Not Specified

Rural

0.43

57

Run off road

K,A,B,C

Not Specified

Rural

1.58

-58

Run off road

K,A,B,C

Not Specified

Rural

Countermeasure: Install shoulder rumble strips with an offset of 9-20 inches relative to the edgeline

CMF	CRF(%)	Quality	Crash Type	Crash Severity	Roadway Type	Area Type
1.02	-2		Run off road	K,A,B,C	Principal Arterial Other Freeways and Expressways	Urban

0.9

10

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

0.49

51

Run off road

K,A,B,C

Principal Arterial Other Freeways and Expressways

Rural

1.06

-6

Run off road

K,A,B,C

Not Specified

Rural

1.3

-30

Run off road

K,A,B,C

Not Specified

Rural

0.62

38

Run off road

K,A,B,C

Not Specified

Rural

0.79

21

Run off road

K,A,B,C

Not Specified

Rural

Countermeasure: Widen shoulder width to 5 feet or greater

CMF	CRF(%)	Quality	Crash Type	Crash Severity	Roadway Type	Area Type
0.64	36		Run off road	K,A,B,C	Principal Arterial Other Freeways and Expressways	Urban

0.47

53

Run off road

K,A,B,C

Not Specified

Rural

1.1

-10

Run off road

K,A,B,C

Not Specified

Rural

0.38

62

Run off road

K,A,B,C

Not Specified

Rural

0.73

27

Run off road

K,A,B,C

Not Specified

Rural

1.07

-7

Run off road

K,A,B,C

Not Specified

Rural

This site is funded by the U.S. Department of Transportation Federal Highway Administration
and maintained by the University of North Carolina Highway Safety Research Center

For more information, contact Sarah Weissman Pascual at sarah.pascual@dot.gov