Accessible Pedestrian Signals at Complex Intersections

Alan C. Scott · Janet M. Barlow · Billie Louise Bentzen · Tamara L. Y. Bond · Douglas Gubbé

22 citations0/0 files storedTransportation Research Record Journal of the Transportation Research Board

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Urban Transport and Accessibility Traffic and Road Safety Assistive Technology in Communication and Mobility

Abstract

Pedestrians with vision impairments often have to cross streets at unfamiliar signalized intersections. The results are reported of research on crossings by blind pedestrians at complex intersections before and after the installation of accessible pedestrian signals (APS) and again following the installation of innovative device features. Objective data on measures of street crossing performance by 56 participants were obtained at four intersections, two each in Charlotte, North Carolina, and Portland, Oregon. The analysis includes broad measures of crossing timing, wayfinding, and independence. After APS installation, delay in starting to cross was reduced by approximately 2 s, and there was significant improvement in independently determining a safe time to cross, beginning to cross during the “Walk” signal, and completing crossings before the onset of perpendicular traffic. Some measures of wayfinding and related measures of independence also improved in Portland. Additional device features introduced after the first postinstallation testing session led to additional improvements in wayfinding during a second postinstallation test in Charlotte.

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2005Blind Pedestrians and the Changing Technology and Geometry of Signalized Intersections: Safety, Orientation, and Independence 2000ADDRESSING BARRIERS TO BLIND PEDESTRIANS AT SIGNALIZED INTERSECTIONS

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2022Mapping the importance of specific physical elements in urban space for blind and visually impaired people 2017Wayfinding Problems for Blind Pedestrians at Noncorner Crosswalks: Novel Solution 2013Effectiveness of Audible and Tactile Heading Cues at Complex Intersections for Pedestrians who are Blind 2019An Intersection Database Facilitates Access to Complex Signalized Intersections for Pedestrians with Vision Disabilities 2014Far-Side Audible Beaconing of Accessible Pedestrian Signals

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