CMF / CRF Details

CMF ID: 10079

Upgrade existing markings to wet-reflective pavement markings

Description: This strategy involves upgrading existing markings from standard marking materials to wet-reflective markings applied as paint, tape, or thermoplastic material.

Prior Condition:  No Prior Condition(s)

Category: Delineation

Study: Safety Effects of Wet-Weather Pavement Markings, Park et al., 2019

Star Quality Rating:4 Stars  [View score details]
Rating Points Total:115
Crash Modification Factor (CMF)
Adjusted Standard Error:
Unadjusted Standard Error:0.104
Crash Reduction Factor (CRF)
Value:16.4  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:10.4
Crash Type:Dry weather
Crash Severity:K (fatal),A (serious injury),B (minor injury),C (possible injury)
Roadway Types:Not specified
Street Type:
Minimum Number of Lanes:
Maximum Number of Lanes:
Number of Lanes Direction:
Number of Lanes Comment:
Crash Weather:Dry weather
Road Division Type:
Minimum Speed Limit:
Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
Area Type:Not specified
Traffic Volume:
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:2011 to 2017
Municipality:Atlanta District
Type of Methodology Used:Before/after using empirical Bayes or full Bayes
Sample Size (crashes):79 crashes after
Sample Size (sites):131 sites before, 131 sites after
Sample Size (miles):629.7 miles before, 629.7 miles after
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Mar 23, 2020