Study Details

Study Title: Safety Effects of Using Narrow Lanes and Shoulder-Use Lanes to Increase the Capacity of Urban Freeways

Authors: Bauer et al.

Publication Date: 2004

Abstract:

Study Citation: Bauer, K. M., Harwood, D. W., Hughes, W. E., and Richard, K. R., "Safety Effects of Using Narrow Lanes and Shoulder-Use Lanes to Increase the Capacity of Urban Freeways." Washington, D.C., 83rd Transportation Research Board Annual Meeting, (2004)


CMFs Associated With This Study

Category: Roadway

Countermeasure: Five to six lane conversion

CMF CRF(%)QualityCrash TypeCrash SeverityRoadway TypeArea Type
1.03[B*]-34 StarsAllAllPrincipal Arterial Other Freeways and ExpresswaysUrban
1.04[B*]-44 StarsAllA,B,C,OPrincipal Arterial Other Freeways and ExpresswaysUrban
1.07[B*]-74 StarsAllK,A,B,CPrincipal Arterial Other Freeways and ExpresswaysUrban

Countermeasure: Four to five lane conversion

CMF CRF(%)QualityCrash TypeCrash SeverityRoadway TypeArea Type
1.11[B]-115 StarsAllAllPrincipal Arterial Other Freeways and ExpresswaysUrban
1.1[B*]-105 StarsAllA,B,C,OPrincipal Arterial Other Freeways and ExpresswaysUrban
1.11[B]-115 StarsAllK,A,B,CPrincipal Arterial Other Freeways and ExpresswaysUrban