CMF / CRF Details
CMF ID: 11170
Install rectangular rapid flashing beacon (RRFB)
Description: Install rectangular rapid flashing beacon (RRFB)
Prior Condition: without RRFB installation
Category: Pedestrians
Study: Safety Effectiveness of Rectangular Rapid Flashing Beacons (RRFB) Pedestrian Enhancement, Amrita Goswamy, Mohamed Abdel-Aty, and Nada Mahmoud, 2022
| Star Quality Rating: |  [View score details] |
| Rating Points Total: | 125 |
| Crash Modification Factor (CMF) | |
|---|---|
| Value: | 1.11 |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 0.026 |
| Crash Reduction Factor (CRF) | |
|---|---|
| Value: | -11 (This value indicates an increase in crashes) |
| Adjusted Standard Error: | |
| Unadjusted Standard Error: | 2.6 |
| Applicability | |
|---|---|
| Crash Type: | Rear end |
| Crash Severity: | All |
| Roadway Types: | Not specified |
| Street Type: | Not Specified |
| Minimum Number of Lanes: | |
| Maximum Number of Lanes: | |
| Number of Lanes Direction: | |
| Number of Lanes Comment: | |
| Crash Weather: | Not specified |
| Road Division Type: | |
| Minimum Speed Limit: | |
| Maximum Speed Limit: | |
| Speed Unit: | |
| Speed Limit Comment: | |
| Area Type: | All |
| Traffic Volume: | |
| Average Traffic Volume: | |
| Time of Day: | Not specified |
| If countermeasure is intersection-based | |
| Intersection Type: | Roadway/pedestrian crossing (eg, midblock crossing) |
| Intersection Geometry: | Not specified |
| 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: | 2012 to 2019 |
| Municipality: | |
| State: | FL |
| Country: | |
| Type of Methodology Used: | |
| Other Details | |
|---|---|
| Included in Highway Safety Manual? | No |
| Date Added to Clearinghouse: | Aug 25, 2022 |
| Comments: | It is the CMF for rear-end crashes. |
