CMF / CRF Details
CMF ID: 4462
Install intersection lighting
Description: Install lighting at intersections where no lighting existed previously.
Prior Condition: No lighting
Category: Highway lighting
Study: A Framework for Estimating the Safety Effects of Roadway Lighting at Intersections, Donnell, Porter, Shankar, 2010
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 85 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.881 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.054 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 11.9 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.54 |
| Applicability | |
|---|---|
| Crash Type: | Nighttime |
| Crash Severity: | All |
| Roadway Types: | Not Specified |
| Street Type: | |
| Minimum Number of Lanes: | 2 |
| Maximum Number of Lanes: | 4 |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | All |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | All |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | Night |
| If countermeasure is intersection-based | |
| Intersection Type: | Roadway/roadway (not interchange related) |
| Intersection Geometry: | 3-leg,4-leg |
| Traffic Control: | Not specified |
| Major Road Traffic Volume: | Minimum of 40 to Maximum of 77430 Annual Average Daily Traffic (AADT) |
| Minor Road Traffic Volume: | Minimum of 1 to Maximum of 77430 Annual Average Daily Traffic (AADT) |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details | |
|---|---|
| Date Range of Data Used: | 1999 to 2002 |
| Municipality: | |
| State: | MN |
| Country: | USA |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (crashes): | 38437 crashes |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Dec 06, 2012 |
| Comments: | |
