CMF / CRF Details

CMF ID: 5500

Install raised pavement markers with restriping (center and edgelines)

Description: Install raised pavement markers with restriping (center and edgelines)

Prior Condition:  Without raised pavement markers and striping

Category: Delineation

Study: Developing Louisiana Crash Reduction Factors, Sun and Das, 2013

Star Quality Rating:2 Stars  [View score details]
Rating Points Total:45
Crash Modification Factor (CMF)
Adjusted Standard Error:
Unadjusted Standard Error:0.21
Crash Reduction Factor (CRF)
Value:31  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:21
Crash Type:Nighttime
Crash Severity:All
Roadway Types:Principal Arterial Other Freeways and Expressways
Street Type:
Minimum Number of Lanes:
Maximum Number of Lanes:
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:Maximum of 20000 Annual Average Daily Traffic (AADT)
Average Traffic Volume:
Time of Day:Night
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:2002 to 2010
Type of Methodology Used:Non-regression cross-section
Sample Size (crashes):48 crashes
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Apr 30, 2014