CMF / CRF Details
CMF ID: 116
Install continuous milled-in shoulder rumble strips
Description:
Prior Condition: No Prior Condition(s)
Category: Shoulder treatments
Study: Evaluation of the Effectiveness of Shoulder Rumble Strips on Rural Multi-lane Divided Highways In Minnesota, Carrasco et al., 2004
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 40 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.83 |
| Adjusted Standard Error: | 0.19 |
| Unadjusted Standard Error: | 0.09 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 17 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | 19 |
| Unadjusted Standard Error: | 9 |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | A (serious injury),B (minor injury),C (possible injury) |
| Roadway Types: | Not Specified |
| Street Type: | |
| Minimum Number of Lanes: | 3 |
| Maximum Number of Lanes: | |
| Number of Lanes Direction: | Both Directions |
| Number of Lanes Comment: | Multi Lane |
| Crash Weather: | Not specified |
| Road Division Type: | Divided |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Rural |
| Traffic Volume: | Minimum of 2000 to Maximum of 50000 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | |
| Time of Day: | |
| If countermeasure is intersection-based | |
| Intersection Type: | |
| Intersection Geometry: | |
| Traffic Control: | |
| Major Road Traffic Volume: | |
| Minor Road Traffic Volume: | |
| Average Major Road Volume : | |
| Average Minor Road Volume : | |
| Development Details | |
|---|---|
| Date Range of Data Used: | |
| Municipality: | |
| State: | |
| Country: | |
| Type of Methodology Used: | Simple before/after |
