CMF / CRF Details
Increase the number of right-turn lanes on the major road from X to Y
Countermeasure ID: 2385
Description: Increase the number of right-turn lanes on the major road from X to Y lanes at rural 2-lane intersections.
Prior Condition: Install right-turn lane on the major road at rural 2-lane intersection to increase the number of right-turn lanes from X to Y.
Category: Intersection geometry
Study Type: Conference Paper
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 90 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: |  |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
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| Value: |  |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Applicability | |
|---|---|
| Crash Type: | Rear end |
| 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: | Not specified |
| Traffic Control: | Not specified |
| Major Road Traffic Volume: | Minimum of 420 to Maximum of 15200 Annual Average Daily Traffic (AADT) |
| Minor Road Traffic Volume: | Minimum of 80 to Maximum of 10400 Annual Average Daily Traffic (AADT) |
| 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: | |
