CMF / CRF Details

CMF ID: 9942

Install a traffic signal


Prior Condition: Two-way stop-controlled

Category: Intersection traffic control

Study: Effects of Signalization at Rural Intersections Considering the Elderly Driving Population, Yue et al., 2019

Star Quality Rating: 3 Stars   [View score details]
Crash Modification Factor (CMF)
Value: Equation
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Type: Rear end
Crash Severity: All
Roadway Types: Not specified
Number of Lanes:
Road Division Type:
Speed Limit:
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: Other
Major Road Traffic Volume:
Minor Road Traffic Volume:
Average Major Road Volume : 8904 Annual Average Daily Traffic (AADT)
Average Minor Road Volume : 3583 Annual Average Daily Traffic (AADT)
Development Details
Date Range of Data Used: 2011 to 2014
State: FL
Type of Methodology Used: Regression cross-section
Sample Size (sites): 79 sites
Sample Size (site-years): 316 site-years
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Jul-26-2019
Comments: This CMF is for crashes involving elderly drivers.