CMF / CRF Details

CMF ID: 7922

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: No adaptive traffic signal control (FAST-TRAC)

Category: Intersection traffic control

Study: Impact of adaptive traffic control systems on crash frequency and severity, Fink et al., 2015

Star Quality Rating: 3 Stars   [View score details]
Crash Modification Factor (CMF)
Value: 0.807
Adjusted Standard Error:
Unadjusted Standard Error: 0.009
Crash Reduction Factor (CRF)
Value: 19.3   (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 0.9
Crash Type: Angle
Crash Severity: All
Roadway Types: Not specified
Number of Lanes:
Road Division Type:
Speed Limit: 25-55
Area Type: Urban and suburban
Traffic Volume:
Average Traffic Volume:
Time of Day: Not specified
If countermeasure is intersection-based
Intersection Type: Roadway/roadway (not interchange related)
Intersection Geometry: Not specified
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: 2010 to 2012
Municipality: Oakland
State: MI
Type of Methodology Used: Regression cross-section
Sample Size (crashes): 4367 crashes
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Mar-08-2016