CMF / CRF Details
CMF ID: 2699
Install transverse rumble strips on stop controlled approaches in rural areas
Description:
Prior Condition: No Prior Condition(s)
Category: Roadway
Study: Safety Evaluation of Transverse Rumble Strips on Approaches to Stop Controlled Intersections in Rural Areas, Srinivasan et al., 2010
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 105 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 1.284 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.185 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | -28.4 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 18.5 |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | O (property damage only) |
| Roadway Types: | Major Collector |
| 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: | Undivided |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | Rural |
| 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: | |
| Minor Road Traffic Volume: | |
| Average Major Road Volume : | 3265 Annual Average Daily Traffic (AADT) |
| Average Minor Road Volume : | 801 Annual Average Daily Traffic (AADT) |
| Development Details | |
|---|---|
| Date Range of Data Used: | 1987 to 2006 |
| Municipality: | |
| State: | IA,MN |
| Country: | |
| Type of Methodology Used: | Before/after using empirical Bayes or full Bayes |
