CMF / CRF Details
CMF ID: 10747
Protected/permissive to protected-only left turn phasing
Description:
Prior Condition: Protected/permitted left turn
Category: Intersection traffic control
Study: Safety Effectiveness of Protected Only over Permitted/Protected Left Turn Phasing in Louisiana, Asaduzzaman et al., 2021
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 85 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 1.367 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.21 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | -36.7 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 21 |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | O (property damage only) |
| Roadway Types: | Not specified |
| Street Type: | |
| Minimum Number of Lanes: | 2 |
| Maximum Number of Lanes: | 5 |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | |
| Minimum Speed Limit: | 25 |
| Maximum Speed Limit: | 55 |
| Speed Unit: | mph |
| Speed Limit Comment: | |
| Area Type: | Urban |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | All |
| If countermeasure is intersection-based | |
| Intersection Type: | Roadway/roadway (not interchange related) |
| Intersection Geometry: | 4-leg |
| Traffic Control: | Signalized |
| Major Road Traffic Volume: | |
| Minor Road Traffic Volume: | |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details | |
|---|---|
| Date Range of Data Used: | 2014 to 2018 |
| Municipality: | |
| State: | LA |
| Country: | |
| Type of Methodology Used: | |
