CMF / CRF Details

CMF ID: 11584

Convert a conventional signalized intersection to a continuous flow intersection (CFI)

Description:

Prior Condition:  Conventional signalized intersection

Category: Intersection geometry

Study: Development of a Crash Modification Factor for Conversion of a Conventional Signalized Intersection to a CFI, Cunningham et al., 2022

 
Star Quality Rating:5 Stars  [View score details]
Rating Points Total:140
Crash Modification Factor (CMF)
Value:0.878
Adjusted Standard Error:
Unadjusted Standard Error:0.027
Crash Reduction Factor (CRF)
Value:12.2  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:2.7
Applicability
Crash Type:All
Crash Severity:All
Roadway Types:All
Street Type:Two-Way
Minimum Number of Lanes:
Maximum Number of Lanes:
Number of Lanes Direction:
Number of Lanes Comment:
Crash Weather:All
Road Division Type:
Minimum Speed Limit:
Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
Area Type:All
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 21740 to Maximum of 64000 Annual Average Daily Traffic (AADT)
Minor Road Traffic Volume:Minimum of 7441 to Maximum of 39220 Annual Average Daily Traffic (AADT)
Average Major Road Volume :41010 Annual Average Daily Traffic (AADT)
Average Minor Road Volume :22368 Annual Average Daily Traffic (AADT)
Development Details
Date Range of Data Used:1995 to 2020
Municipality:
State:CO, GA, MS, OH, TX, UT
Country:USA
Type of Methodology Used:
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Sep 23, 2024
Comments:CMF is presented in Table 35 in the report.