CMF / CRF Details

CMF ID: 5530

Install a traffic signal

Description:

Prior Condition: Stop controlled intersection

Category: Intersection traffic control

Study: Comparison of Safety Evaluation Approaches for Intersection Signalization in Florida, Wang and Abdel-Aty, 2014

 
Star Quality Rating: 2 Stars   [View score details]
Rating Points Total: 50
Crash Modification Factor (CMF)
Value: 1.184
Adjusted Standard Error:
Unadjusted Standard Error: 0.205
Crash Reduction Factor (CRF)
Value: -18.4   (This value indicates an increase in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 20.5
Applicability
Crash Type: All
Crash Severity: K (fatal),A (serious injury),B (minor injury),C (possible injury)
Roadway Types: Not specified
Street Type:
Minimum Number of Lanes: 2
Maximum Number of Lanes: 4
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: Not specified
Traffic Volume:
Average Traffic Volume:
Time of Day: Not specified
If countermeasure is intersection-based
Intersection Type: Roadway/roadway (not interchange related)
Intersection Geometry: 3-leg,4-leg
Traffic Control: Stop-controlled
Major Road Traffic Volume: Minimum of 20000 to Maximum of 25000 Annual Average Daily Traffic (AADT)
Minor Road Traffic Volume:
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used: 2004 to 2009
Municipality:
State: FL
Country:
Type of Methodology Used: Before/after using empirical Bayes or full Bayes
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Aug-12-2014
Comments: CMF applies to intersections with major road AADT 20,000-25,000