CMF / CRF Details
CMF ID: 351
Replace direct left-turn with right-turn/U-turn
Description:
Prior Condition: No Prior Condition(s)
Category: Access management
Study: Right Turns Followed by U-Turns Versus Direct Left Turns: A Comparison of Safety Issues, Xu, 2001
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 75 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.8 |
| Adjusted Standard Error: | 0.13 |
| Unadjusted Standard Error: | 0.03 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 20 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | 13 |
| Unadjusted Standard Error: | 3 |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | All |
| Roadway Types: | Principal Arterial Other |
| Street Type: | |
| Minimum Number of Lanes: | 4 |
| Maximum Number of Lanes: | 8 |
| 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: | Not Specified |
| 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: | |
| Minor Road Traffic Volume: | Minimum of 0 to Maximum of 34000 Annual Average Daily Traffic (AADT) |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details | |
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| Date Range of Data Used: | |
| Municipality: | |
| State: | |
| Country: | |
| Type of Methodology Used: | Non-regression cross-section |
