CMF / CRF Details

CMF ID: 10806

Install adaptive traffic signal control

Description: ATSC is a traffic management strategy in which traffic signal timings change, or adapt, based on observed traffic demand. These systems utilize increased detection to continually collect data on observed demand, and signal timings are then re-optimized based on current data.

Prior Condition: Signalized Intersection

Category: Intersection traffic control

Study: Developing Crash Modification Factors for Adaptive Signal Control Technologies, Avelar et al., 2021

 
Star Quality Rating: 2 Stars   [View score details]
Rating Points Total: 60
Crash Modification Factor (CMF)
Value: 1.045
Adjusted Standard Error:
Unadjusted Standard Error: 0.038
Crash Reduction Factor (CRF)
Value: -4.5   (This value indicates an increase in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 3.8
Applicability
Crash Type: All
Crash Severity: All
Roadway Types: Not specified
Street Type:
Minimum Number of Lanes: 2
Maximum Number of Lanes: 9
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: Urban
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,4-leg
Traffic Control: Signalized
Major Road Traffic Volume: Minimum of 14223 to Maximum of 207000 Annual Average Daily Traffic (AADT)
Minor Road Traffic Volume: Minimum of 1669 to Maximum of 64500 Annual Average Daily Traffic (AADT)
Average Major Road Volume : 47731 Annual Average Daily Traffic (AADT)
Average Minor Road Volume : 14829 Annual Average Daily Traffic (AADT)
Development Details
Date Range of Data Used: 2010 to 2016
Municipality:
State: FL
Country:
Type of Methodology Used:
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Aug-11-2021
Comments: Estimated using traditional EB before/after methodology. Accounts for intersection crashes within 250 feet of an intersection.