CMF / CRF Details
Upgrade existing markings to wet-reflective pavement markings
Countermeasure ID: 10078
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: |  [View score details] |
| Rating Points Total: | 130 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.466 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.119 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 53.4 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 11.9 |
| Applicability | |
|---|---|
| Crash Type: | Wet road |
| 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: | Wet road |
| 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): | 18 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: | |
