CMF / CRF Details

CMF ID: 10410

Install centerline and shoulder rumble strips

Description: Milled or rolled rumble strips.

Prior Condition:  No Prior Condition(s)

Category: Roadway

Study: Evaluation of the safety effectiveness of lane departure countermeasures on two-lane undivided roadways using crash modification factors, Dissanayake and Galgamuwa, 2019

 
Star Quality Rating:4 Stars  [View score details]
Rating Points Total:115
Crash Modification Factor (CMF)
Value:0.68
Adjusted Standard Error:
Unadjusted Standard Error:0.041
Crash Reduction Factor (CRF)
Value:32  (This value indicates a decrease in crashes)
Adjusted Standard Error:
Unadjusted Standard Error:4.1
Applicability
Crash Type:Run off road
Crash Severity:All
Roadway Types:Not specified
Street Type:
Minimum Number of Lanes:2
Maximum Number of Lanes:2
Number of Lanes Direction:
Number of Lanes Comment:
Crash Weather:Not specified
Road Division Type:Undivided
Minimum Speed Limit:
Maximum Speed Limit:
Speed Unit:
Speed Limit Comment:
Area Type:Rural
Traffic Volume:Minimum of 30 to Maximum of 15900 Annual Average Daily Traffic (AADT)
Average Traffic Volume:1596 Annual Average Daily Traffic (AADT)
Time of Day:Not specified
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 (crashes):8487 crashes
Sample Size (sites):22061 sites
Sample Size (miles):9027 miles
Other Details
Included in Highway Safety Manual?No
Date Added to Clearinghouse:Jun 01, 2020
Comments:CMF for lane departure crashes on tangent road segments