CMF / CRF Details

CMF ID: 4585

Convert right shoulder width from 8-ft to 4-ft

Description: Convert right shoulder width from 8-ft to 4-ft

Prior Condition: 8 ft wide shoulder

Category: Shoulder treatments

Study: Accident Modification Factors for Traffic Engineering and ITS Improvements, Harkey et al., 2008

 
Star Quality Rating: Cannot Be Rated (HSM)
Crash Modification Factor (CMF)
Value: 1.09
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Value: -9   (This value indicates an increase in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:
Applicability
Crash Type: All
Crash Severity: Not specified
Roadway Types: Principal Arterial Other
Number of Lanes: Multilane
Road Division Type: Divided by Median
Speed Limit:
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:
Municipality:
State:
Country:
Type of Methodology Used: Expert panel
Other Details
Included in Highway Safety Manual?
Date Added to Clearinghouse: Dec-01-2009
Comments: HSM 1st Ed, Table 13-8