CMF / CRF Details

CMF ID: 1969

Install cable median barrier (low or high tension on curve)

Description:

Prior Condition:  Depressed median without barrier.

Category: Roadside

Study: Safety Impact of Cable Barriers on Rural Interstates, Villwock et al., 2009

 
Star Quality Rating:4 Stars  [View score details]
Rating Points Total:120
Crash Modification Factor (CMF)
Value:0.06
Adjusted Standard Error:
Unadjusted Standard Error:0.1
Crash Reduction Factor (CRF)
Value:94  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:10
Applicability
Crash Type:Cross median,Frontal and opposing direction sideswipe,Head on
Crash Severity:All
Roadway Types:Principal Arterial Interstate
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:Divided by Median
Minimum Speed Limit:
Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
Area Type:Rural
Traffic Volume:
Average Traffic Volume:
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:1993 to 2005
Municipality:
State:IN
Country:
Type of Methodology Used:Before/after using empirical Bayes or full Bayes
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Dec 01, 2009
Comments: