CMF / CRF Details

CMF ID: 14

Widen paved shoulder from 3 ft to 8 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:75
Crash Modification Factor (CMF)
Value:0.88
Adjusted Standard Error:0.32
Unadjusted Standard Error:0.11
Crash Reduction Factor (CRF)
Value:12  (This value indicates a decrease in crashes)
Adjusted Standard Error:32
Unadjusted Standard Error:11
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: