CMF / CRF Details

CMF ID: 40

Change barrier along embankment to less rigid type

Description:

Prior Condition: No Prior Condition(s)

Category: Roadside

Study: Handbook of Road Safety Measures, Elvik, R. and Vaa, T., 2004

 
Star Quality Rating: 3 Stars   [View score details]
Rating Points Total: 105
Crash Modification Factor (CMF)
Value: 0.59
Adjusted Standard Error: 0.31
Unadjusted Standard Error: 0.17
Crash Reduction Factor (CRF)
Value: 41   (This value indicates a decrease in crashes)
Adjusted Standard Error: 31
Unadjusted Standard Error: 17
Applicability
Crash Type: Run off road
Crash Severity: K (fatal)
Roadway Types: Not specified
Number of Lanes:
Road Division Type:
Speed Limit:
Area Type: Not specified
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: 9
Other Details
Included in Highway Safety Manual? Yes. HSM lists this CMF in italics font to indicate that it has a lower reliability than bold font CMFs since it has an adjusted standard error of 0.2 to 0.3.
Date Added to Clearinghouse: Dec-01-2009
Comments: