CMF / CRF Details
CMF ID: 8117
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: Standard pavement markings
Category: Delineation
Study: Safety Evaluation of Wet Reflective Pavement Markers, Lyon et al., 2015
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 115 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.944 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.075 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 5.6 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 7.5 |
| 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: | Undivided |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | |
| Traffic Volume: | Minimum of 39 to Maximum of 13779 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | 2202 Annual Average Daily Traffic (AADT) |
| 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: | 2003 to 2012 |
| Municipality: | |
| State: | MN |
| Country: | |
| Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
| Sample Size (crashes): | 176 crashes after |
| Sample Size (miles): | 736 miles before, 736 miles after |
| Sample Size (miles): | 5540 mile-years before, 1088 mile-years after |
