CMF / CRF Details

CMF ID: 2824

Install median barrier (cable)

Description:

Prior Condition:  No Prior Condition(s)

Category: Roadside

Study: Performance Evaluation of Cable Median Barrier Systems in Texas, Cooner et al., 2009

 
Star Quality Rating:1 Star  [View score details]
Rating Points Total:30
Crash Modification Factor (CMF)
Value:0.07
Adjusted Standard Error:
Unadjusted Standard Error:0.07
Crash Reduction Factor (CRF)
Value:93  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:7.4
Applicability
Crash Type:All
Crash Severity:K (fatal)
Roadway Types:Not specified
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:
Minimum Speed Limit:
Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
Area Type:
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:2004 to 2007
Municipality:
State:TX
Country:USA
Type of Methodology Used:Simple before/after
Sample Size (crashes):14 crashes before, 1 crashes after
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Mar 21, 2011
Comments: