CMF / CRF Details

CMF ID: 4599

Convert paved shoulder to turf shoulder (maintain 4 ft width)

Description: Convert paved shoulder to turf shoulder (maintain 4 ft width)

Prior Condition:  Paved shoulder (HSM notes that to determine the CMF for changing the shoulder type, divide the "new" condition CMF by the "existing" condition CMF.

Category: Shoulder treatments

Study: Highway Safety Manual, 1st Edition, Various, 2010

Star Quality Rating:Cannot Be Rated (HSM)
Rating Points Total:
Crash Modification Factor (CMF)
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Value:-5  (This value indicates an increase in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Type:Head on,Run off road,Sideswipe,Single vehicle
Crash Severity:Not specified
Roadway Types:Minor Arterial
Street Type:
Minimum Number of Lanes:2
Maximum Number of Lanes:2
Number of Lanes Direction:
Number of Lanes Comment:
Crash Weather:Not specified
Road Division Type:
Minimum Speed Limit:
Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
Area Type:Rural
Traffic Volume:
Average Traffic Volume:
Time of Day:
If countermeasure is intersection-based
Intersection Type:
Intersection Geometry:
Traffic Control:
Major Road Traffic Volume:
Minor Road Traffic Volume:
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used:
State:No state(s) chosen.
Type of Methodology Used:
Other Details
Included in Highway Safety Manual?
Date Added to Clearinghouse:Jan 01, 1970
Comments:HSM 1st Ed, Table 13-9