CMF / CRF Details
CMF ID: 2376
Provide intersection illumination
Description:
Prior Condition: Rural 2-lane intersection with no lighting.
Category: Highway lighting
Study: A Simultaneous Equations Model of Crash Frequency By Collision Type for Rural Intersections, Ye et al., 2008
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 110 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.67 |
| Adjusted Standard Error: | 0.12 |
| Unadjusted Standard Error: | 0.12 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 32.6 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | 12.1 |
| Unadjusted Standard Error: | 12.1 |
| Applicability | |
|---|---|
| Crash Type: | Angle |
| 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: | 25 |
| Maximum Speed Limit: | 55 |
| Speed Unit: | mph |
| Speed Limit Comment: | |
| Area Type: | Rural |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | All |
| If countermeasure is intersection-based | |
| Intersection Type: | Roadway/roadway (not interchange related) |
| Intersection Geometry: | |
| Traffic Control: | Not specified |
| Major Road Traffic Volume: | Minimum of 420 to Maximum of 15200 |
| Minor Road Traffic Volume: | Minimum of 80 to Maximum of 10400 |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details | |
|---|---|
| Date Range of Data Used: | 1996 to 1997 |
| Municipality: | 38 Counties |
| State: | GA |
| Country: | |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (site-years): | 330 site-years |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Jan 01, 1970 |
| Comments: | Countermeasure name has been slightly modified for consistency across Clearinghouse |
