CMF / CRF Details
CMF ID: 5451
Install shoulder rumble strips
Description:
Prior Condition: rumble strips are only installed on right side
Category: Shoulder treatments
Study: Development of Crash Modification Factors for Left Side Rumble Strips, Mulkern and Hildebrand, 2013
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 30 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 0.93 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | 7 (This value indicates a decrease in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | |
| Applicability | |
|---|---|
| Crash Type: | Run off road |
| Crash Severity: | All |
| Roadway Types: | Principal Arterial Other Freeways and Expressways |
| Street Type: | |
| Minimum Number of Lanes: | |
| Maximum Number of Lanes: | |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | Divided by Median |
| Minimum Speed Limit: | 100 |
| Maximum Speed Limit: | 110 |
| Speed Unit: | km/h |
| Speed Limit Comment: | |
| Area Type: | Rural |
| Traffic Volume: | Minimum of 4387 to Maximum of 20614 Annual Average Daily Traffic (AADT) |
| Average Traffic Volume: | 11480 Annual Average Daily Traffic (AADT) |
| Time of Day: | Not specified |
| 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: | 1998 to 2011 |
| Municipality: | New Brunswick |
| State: | notusa |
| Country: | Canada |
| Type of Methodology Used: | Other before/after |
| Sample Size (crashes): | 756 crashes before |
