Study Details

Study Title: Older Drivers at a Crossroads

Authors: Morena et al.

Publication Date: 2007

Abstract:

Study Citation: Morena, D. A., Wainwright, W. S., and Ranck, F., "Older Drivers at a Crossroads." Public Roads, Vol. 70, No. 4, Washington, D.C., FHWA, (2007) pp. 6-15.


CMFs Associated With This Study

Category: Intersection geometry

Countermeasure: Install left-turn lane (signal has left-turn phase)

CMF CRF(%)QualityCrash TypeCrash SeverityRoadway TypeArea Type
0.27731 StarHead onAllNot specifiedUrban
0.34661 StarHead onAllNot specifiedUrban

Category:Intersection traffic control

Countermeasure: Add additional signal and upgrade to 12-inch lenses

CMF CRF(%)QualityCrash TypeCrash SeverityRoadway TypeArea Type
0.69312 StarsAllAllNot specifiedUrban
0.83172 StarsAllAllNot specifiedUrban

Countermeasure: Install flashing beacons as advance warning

CMF CRF(%)QualityCrash TypeCrash SeverityRoadway TypeArea Type
0.64361 StarRear endAllNot specifiedAll
0.38621 StarAngleAllNot specifiedAll

Countermeasure: Modify change plus clearance interval to ITE 1985 Proposed Recommended Practice

CMF CRF(%)QualityCrash TypeCrash SeverityRoadway TypeArea Type
0.82181 StarAllAllNot specifiedUrban
0.59411 StarNot specifiedAllNot specifiedUrban