CMF / CRF Details

CMF ID: 9024

Install rectangular rapid flashing beacon (RRFB)

Description: Install rectangular rapid flashing beacon (RRFB)

Prior Condition: No RRFB

Category: Pedestrians

Study: Development of Crash Modification Factors for Uncontrolled Pedestrian Crossing Treatments, Zegeer et al., 2017

Star Quality Rating: 3 Stars   [View score details]
Rating Points Total: 85
Crash Modification Factor (CMF)
Value: 0.526
Adjusted Standard Error:
Unadjusted Standard Error: 0.377
Crash Reduction Factor (CRF)
Value: 47.4   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 37.7
Crash Type: Vehicle/pedestrian
Crash Severity: All
Roadway Types: Minor Arterial
Number of Lanes: 2 to 8
Road Division Type:
Speed Limit:
Area Type: Urban and suburban
Traffic Volume: Minimum of 533 to Maximum of 49402 Annual Average Daily Traffic (AADT)
Average Traffic Volume: 15958 Annual Average Daily Traffic (AADT)
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: 2004 to 2013
State: AZ, FL, IL, MA, NY, NC, OR, VA, WI
Country: USA
Type of Methodology Used: 7
Sample Size (site-years): 1928 site-years
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Nov-17-2017