Crossing Solutions at Roundabouts and Channelized Turn Lanes for Pedestrians with Vision Disabilities: A Guidebook (2017) / Chapter Skim
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1 C H A P T E R 1 Introduction This report presents a guidebook for the application of crossing solutions at roundabouts and channelized turn lanes to assist pedestrians with vision disabilities. The accessibility of these two complex intersections forms is an important civil rights challenge in the United States that has broad potential implications for engineering practice in this country.
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2 Crossing Solutions at Roundabouts and Channelized Turn Lanes for Pedestrians with Vision Disabilities: A Guidebook principles for the accessibility of a roundabout or CTL, and translating these principles into performance-based checks that can be integrated in the design process for a new site. This guidebook does not entail any policy recommendations for accessibility, nor does it prescribe standards for accessibility of the intersection types discussed.
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Introduction 3 public right-of-way compliant with ADA. Specifically, paragraph R306.3.2 requires that, at roundabouts with multilane pedestrian street crossings, a pedestrian-activated accessible pedestrian signal (APS)
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4 Crossing Solutions at Roundabouts and Channelized Turn Lanes for Pedestrians with Vision Disabilities: A Guidebook The crossing task at CTLs and roundabouts is often challenging for persons with vision impairments due to the prevailing curved vehicle paths and movement of other nearby vehicles. The task of correctly identifying vehicle positions and trajectories, vehicle gaps, and driver yielding based upon auditory information alone is challenging.
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Introduction 5 1.5 Outline of the Document This chapter has provided a general overview of the guidebook and of accessibility challenges for pedestrians who are blind at roundabouts and CTLs. The remainder of the document is organized as follows.
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