CMF / CRF Details

CMF ID: 9733

Install cable median barrier

Description: Install cable median barrier

Prior Condition:  No Prior Condition(s)

Category: Roadside

Study: Estimating Crash Modification Factors for Lane Departure Countermeasures in Kansas, Dissanayake and Galgamuwa, 2017

 
Star Quality Rating:2 Stars  [View score details]
Rating Points Total:70
Crash Modification Factor (CMF)
Value:0.82
Adjusted Standard Error:
Unadjusted Standard Error:0.046
Crash Reduction Factor (CRF)
Value:18  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:4.6
Applicability
Crash Type:Run off road
Crash Severity:K (fatal),A (serious injury),B (minor injury),C (possible injury)
Roadway Types:Not specified
Street Type:
Minimum Number of Lanes:4
Maximum Number of Lanes:4
Number of Lanes Direction:
Number of Lanes Comment:
Crash Weather:Not specified
Road Division Type:Divided by Median
Minimum Speed Limit:65
Maximum Speed Limit:70
Speed Unit:mph
Speed Limit Comment:
Area Type:Not specified
Traffic Volume:Minimum of 2670 to Maximum of 79800 Annual Average Daily Traffic (AADT)
Average Traffic Volume:26920 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:2009 to 2014
Municipality:
State:KS
Country:USA
Type of Methodology Used:Regression cross-section
Sample Size (sites):1545 sites
Sample Size (miles):258.2 miles
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Oct 27, 2018
Comments:CMF for lane departure crashes