CMF / CRF Details
CMF ID: 11671
Install Rumble Strips (Horizontal Curves)
Description:
Prior Condition: Absence of centerline and shoulder rumble strips on horizontal curves
Category: Roadway
Study: Crash Modification Factors of Rumble Strips Applied on Horizontal Curves of Two-Lane Rural Roads: A Propensity Scores Potential Outcomes Approach, Ahmed et al., 2024
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 130 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 1.01 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.025 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | -1 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 2.5 |
| Applicability | |
|---|---|
| Crash Type: | All |
| Crash Severity: | All |
| Roadway Types: | Principal Arterial Other |
| Street Type: | Two-Way |
| Minimum Number of Lanes: | 2 |
| Maximum Number of Lanes: | 2 |
| Number of Lanes Direction: | Both Directions |
| Number of Lanes Comment: | |
| Crash Weather: | All |
| Road Division Type: | Undivided |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | mph |
| Speed Limit Comment: | |
| Area Type: | Rural |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | All |
| 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: | 2017 to 2021 |
| Municipality: | |
| State: | PA |
| Country: | USA |
| Type of Methodology Used: | |
