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Engineering Strategies for Older Drivers

This document outlines essential engineering strategies aimed at improving safety for older drivers, noting that measures beneficial to this demographic also enhance safety for all road users. Key functional abilities affected by aging, including physical function, vision, and cognition, are considered. Suggested improvements encompass road signage enhancements, signal phase modifications, better lighting, roadway delineation, and the implementation of protective turn signals. Access additional resources on traffic safety and designs that accommodate older drivers.

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Engineering Strategies for Older Drivers

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  1. Engineering Strategies for Older Drivers Will Stein Federal Highway Administration May 6, 2010

  2. Measures that improve safety for older drivers almost always improve safety for the population at large.

  3. Key Functional Abilities affected by Aging • Physical function: strength, flexibility, range of motion. • Vision: visual acuity, contrast sensitivity, glare sensitivity. • Cognition: working memory, selective attention, processing speed.

  4. Engineering Resource http://www.trb.org/Main/Public/Blurbs/154829.aspx

  5. 1. Advance warning signs

  6. 2. Advance guide signs and street name signs

  7. Engineering Resource http://mutcd.fhwa.dot.gov/

  8. 3. Increase size and letter height of roadway signs

  9. 4. Provide all-red clearance intervals at signalized intersections5. Provide more protected left-turn signal phases at high-volume intersectionsOther signal enhancements:—Background shields—Larger signal heads

  10. 6. Provide offset turn lanes at intersections

  11. 7. Improve lighting at intersections, horizontal curves, and railroad crossings

  12. 8. Improve roadway delineation

  13. 9. Replace painted channelization with raised channelization

  14. 10. Reduce intersection skew angle

  15. 11. Improve traffic control at work zones

  16. Engineering Resources http://mutcd.fhwa.dot.gov/pdfs/PocketGuide0404.pdf

  17. Other FHWA Resources http://safety.fhwa.dot.gov/older_users/ • Highway Design Handbook for Older Drivers and Pedestrians(updated version planned for 2011). • Guidelines and Recommendations to Accommodate Older Drivers and Pedestrians(updated version planned for 2010). • Older Driver and Pedestrian Design Workshop

  18. Measures that improve safety for older drivers almost always improve safety for the population at large. Questions & Comments

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