CMF / CRF Details

CMF ID: 10277

Install cable median barrier

Description: Install cable median barrier

Prior Condition:  No Prior Condition(s)

Category: Roadside

Study: Safety Effectiveness Evaluation of Median Cable Barriers on Freeways in Ohio, Eustace, D. and M. Almothaffar., 2018

 
Star Quality Rating:3 Stars  [View score details]
Rating Points Total:105
Crash Modification Factor (CMF)
Value:0.261
Adjusted Standard Error:
Unadjusted Standard Error:0.038
Crash Reduction Factor (CRF)
Value:73.9  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:3.8
Applicability
Crash Type:Cross median
Crash Severity:All
Roadway Types:All
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 :
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Development Details
Date Range of Data Used:2009 to 2014
Municipality:
State:OH
Country:
Type of Methodology Used:Before/after using empirical Bayes or full Bayes
Sample Size (crashes):2209 crashes after
Sample Size (sites):41 sites before, 41 sites after
Sample Size (miles):201 miles before, 201 miles after
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Dec 07, 2019
Comments: