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(%) Quality Crash Type Crash Severity Roadway Type Area Type
0.27 73 1 Star Head on All Not specified Urban
0.34 66 1 Star Head on All Not specified Urban

Category:Intersection traffic control

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

CMF CRF(%) Quality Crash Type Crash Severity Roadway Type Area Type
0.69 31 2 Stars All All Not specified Urban
0.83 17 2 Stars All All Not specified Urban

Countermeasure: Install flashing beacons as advance warning

CMF CRF(%) Quality Crash Type Crash Severity Roadway Type Area Type
0.64 36 2 Stars Rear end All Not specified All
0.38 62 2 Stars Angle All Not specified All

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

CMF CRF(%) Quality Crash Type Crash Severity Roadway Type Area Type
0.82 18 2 Stars All All Not specified Urban
0.59 41 2 Stars Not specified All Not specified Urban