CMF / CRF Details

CMF ID: 4048

Installation of additional travel lanes and a raised island

Description: At two-lane intersections where bicyclists are crossing the main/priority road

Prior Condition: Two lane road with no raised median on the priority road

Category: Bicyclists

Study: Road Factors and Bicycle-Motor Vehicle Crashes at Unsignalized Priority Intersections, Schepers et al., 2011

Star Quality Rating: 2 Stars   [View score details]
Crash Modification Factor (CMF)
Value: 1.1
Adjusted Standard Error:
Unadjusted Standard Error: 0.456
Crash Reduction Factor (CRF)
Value: -10   (This value indicates an increase in crashes)
Adjusted Standard Error:
Unadjusted Standard Error: 45.6
Crash Type: Vehicle/bicycle
Crash Severity: All
Roadway Types: All
Number of Lanes:
Road Division Type:
Speed Limit:
Area Type: Urban and suburban
Traffic Volume:
Average Traffic Volume:
Time of Day: All
If countermeasure is intersection-based
Intersection Type: Roadway/roadway (not interchange related)
Intersection Geometry:
Traffic Control:
Major Road Traffic Volume:
Minor Road Traffic Volume:
Average Major Road Volume : 7000 Annual Average Daily Traffic (AADT)
Average Minor Road Volume :
Development Details
Date Range of Data Used: 2005 to 2008
Country: Netherlands
Type of Methodology Used: Regression cross-section
Sample Size (site-years): 124 site-years
Other Details
Included in Highway Safety Manual? No
Date Added to Clearinghouse: Jun-04-2012