CMF / CRF Details

CMF ID: 11501

Modify frontage road and/or ramp lane

Description:

Prior Condition:  Frontage road intersecting divided cross street (urban and suburban).

Category: Access management

Study: Developing Crash Modification Factors for Wrong-Way-Driving Countermeasures, Avelar et al., 2023

 
Star Quality Rating:4 Stars  [View score details]
Rating Points Total:120
Crash Modification Factor (CMF)
Value:0.863
Adjusted Standard Error:
Unadjusted Standard Error:
Crash Reduction Factor (CRF)
Value:13.7  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:
Applicability
Crash Type:Other
Crash Severity:All
Roadway Types:Principal Arterial Interstate, Principal Arterial Other Freeways and Expressways
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:Divided by Median
Minimum Speed Limit:
Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
Area Type:Urban and suburban
Traffic Volume:
Average Traffic Volume:
Time of Day:Night
If countermeasure is intersection-based
Intersection Type:Roadway/roadway (interchange ramp terminal)
Intersection Geometry:No values chosen.
Traffic Control:Not specified
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 2019
Municipality:
State:TX
Country:USA
Type of Methodology Used:
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Sep 23, 2024
Comments:This CMF is for Nightime Wrong Way Driving crashes as a result of removing ramp lane. CMF is presented in Table 18 in the report.