CMF / CRF Details
CMF ID: 3100
Install lighted pavement marking system for lane delineation
Description:
Prior Condition: Double left turn lanes without lighted pavement markers
Category: Delineation
Study: Evaluation of a Lighted Pavement Marking System for Lane Delineation, Stevens et al., 2011
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 10 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.889 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.432 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 11.1 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 43.2 |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | All |
| Roadway Types: | Principal Arterial Other |
| 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: | Divided by Median |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Urban |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | All |
| If countermeasure is intersection-based | |
| Intersection Type: | Roadway/roadway (not interchange related) |
| Intersection Geometry: | 4-leg |
| Traffic Control: | Signalized |
| Major Road Traffic Volume: | Minimum of 28967 to Maximum of 27777 Average Daily Traffic (ADT) |
| Minor Road Traffic Volume: | |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details | |
|---|---|
| Date Range of Data Used: | 2009 to 2010 |
| Municipality: | Sugar Land |
| State: | TX |
| Country: | USA |
| Type of Methodology Used: | Simple before/after |
| Sample Size (crashes): | 9 crashes before, 8 crashes after |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Jul 15, 2011 |
| Comments: | |
