CMF / CRF Details
CMF ID: 5425
Provide intersection illumination
Description:
Prior Condition: No lighting
Category: Highway lighting
Study: To Illuminate or not to illuminate: Roadway lighting as it affects traffic safety at intersections, Bullough et al., 2012
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 85 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.91 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.07 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 9 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 7 |
| Applicability | |
|---|---|
| Crash Type: | Nighttime |
| Crash Severity: | All |
| Roadway Types: | Not specified |
| 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: | |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Urban and suburban |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | |
| If countermeasure is intersection-based | |
| Intersection Type: | Roadway/roadway (not interchange related) |
| Intersection Geometry: | Not specified |
| Traffic Control: | Stop-controlled |
| Major Road Traffic Volume: | Minimum of 40 to Maximum of 77430 Average Daily Traffic (ADT) |
| Minor Road Traffic Volume: | Minimum of 1 to Maximum of 77430 Average Daily Traffic (ADT) |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details | |
|---|---|
| Date Range of Data Used: | 1999 to 2002 |
| Municipality: | |
| State: | MN |
| Country: | |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (site-years): | 7730 site-years |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Jan 09, 2014 |
| Comments: | |
