CMF / CRF Details

CMF ID: 10

Widen paved shoulder from 3 ft to 4 ft

Description:

Prior Condition: No Prior Condition(s)

Category: Shoulder treatments

Study: Highway Safety Manual Knowledge Document, Various, 2009

 
Star Quality Rating: 3 Stars   [View score details]
Rating Points Total: 80
Crash Modification Factor (CMF)
Value: 0.97
Adjusted Standard Error: 0.07
Unadjusted Standard Error: 0.02
Crash Reduction Factor (CRF)
Value: 3   (This value indicates a decrease in crashes)
Adjusted Standard Error: 7
Unadjusted Standard Error: 2
Applicability
Crash Type: All
Crash Severity: All
Roadway Types: Not specified
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: Minimum of All to Maximum of All
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: Meta-analysis
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Dec-01-2009
Comments: