CMF / CRF Details

CMF ID: 11214

Flatten side slopes

Description:

Prior Condition:  Slope toe at least 5 ft from paved shoulder, less than 20 utility poles per mile, lateral offsets between 10 and 20 ft, and either 1V:2H or 1V:3H side slope

Category: Roadside

Study: Developing Crash Modification Factors for Guardrails, Utility Poles, and Side-Slope Improvements, Avelar et al., 2021

 
Star Quality Rating:3 Stars  [View score details]
Rating Points Total:85
Crash Modification Factor (CMF)
Value:0.8699
Adjusted Standard Error:
Unadjusted Standard Error:0.0715
Crash Reduction Factor (CRF)
Value:13.01  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:7.15
Applicability
Crash Type:Other
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:Rural
Traffic Volume:Minimum of 1531 to Maximum of 26560 Annual Average Daily Traffic (AADT)
Average Traffic Volume:7224 Annual Average Daily Traffic (AADT)
Time of Day:All
If countermeasure is intersection-based
Intersection Type:
Intersection Geometry:
Traffic Control:
Major Road Traffic Volume:
Minor Road Traffic Volume:
Average Major Road Volume :
Average Minor Road Volume :
Development Details
Date Range of Data Used:2008 to 2013
Municipality:
State:IN,PA
Country:USA
Type of Methodology Used:
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Aug 25, 2022
Comments:This CMF is for Roadway Departure Crashes as a result of flattening side slopes from 1V:2H or 1V:3H to 1V:4H or 1V:5H.