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)
Value: 0.836
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
Applicability
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
State: TX
Country: USA
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
Comments: