CMF / CRF Details

CMF ID: 11258

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 Intersections without Adaptive Traffic Signals

Category: Intersection traffic control

Study: Updated CMFs for Adaptive Traffic Signals in Pennsylvania, Gayah and Donnell, 2022

 
Star Quality Rating:3 Stars  [View score details]
Rating Points Total:75
Crash Modification Factor (CMF)
Value:0.977
Adjusted Standard Error:
Unadjusted Standard Error:0.04
Crash Reduction Factor (CRF)
Value:2.3  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:4
Applicability
Crash Type:All
Crash Severity:All
Roadway Types:All
Street Type:
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:
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:Signalized
Major Road Traffic Volume:
Minor Road Traffic Volume:
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used:2003 to 2020
Municipality:
State:PA
Country:USA
Type of Methodology Used:
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Dec 06, 2022
Comments:This is an Intersection-Level CMF for All 3-Leg Adaptive Intersections