CMF / CRF Details
Install right-in-right-out (RIRO) operations at stop-controlled intersections
Countermeasure ID: 9821
Description:
Prior Condition: No Prior Condition(s)
Category: Access management
Study: Safety Effects of Turning Movement Restrictions at Stop-Controlled Intersections, Le et al., 2018
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 105 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.55 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.09 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 45 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 9 |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | All |
| Roadway Types: | Not specified |
| Street Type: | |
| Minimum Number of Lanes: | 4 |
| Maximum Number of Lanes: | 6 |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | 4 and 6 Lanes |
| Crash Weather: | Not specified |
| Road Division Type: | Divided by Median |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| 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: | 3-leg |
| Traffic Control: | Stop-controlled |
| Major Road Traffic Volume: | Minimum of 13433 to Maximum of 75000 Annual Average Daily Traffic (AADT) |
| Minor Road Traffic Volume: | Minimum of 51 to Maximum of 2600 Annual Average Daily Traffic (AADT) |
| Average Major Road Volume : | 38724 Annual Average Daily Traffic (AADT) |
| Average Minor Road Volume : | 519 Annual Average Daily Traffic (AADT) |
| Development Details | |
|---|---|
| Date Range of Data Used: | |
| Municipality: | |
| State: | CA |
| Country: | USA |
| Type of Methodology Used: | Regression cross-section |
| Sample Size (crashes): | 483 crashes |
| Sample Size (sites): | 138 sites |
