Road User Understanding of Bicycle Signal Faces on Traffic Signals (2020) / Chapter Skim
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1. Introduction
1. Introduction
Pages 4-6
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From page 4... ...
From a human factors perspective, road users must first identify the various signal displays in their visual field, then discriminate which displays apply to them and their movement. Human factors issues of visual acuity, contrast sensitivity, color perception, and expectations contribute to the user's ability to understand the display (Wickens et al., 1998)
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. Nationally, although the MUTCD contained provisions for circular signal indications to control bicycle movements, bicycle symbols in the signal face were not permitted until the "Interim Approval for Optional Use of a Bicycle Signal Face (IA-16)
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Chapter 2: Background and Literature Review provides a brief review of the human factors concepts of visibility, comprehension, compliance, and driver error focused on traffic signal faces. Additionally, a review of the literature, including published evaluation reports and blog posts that relate to bicycle signals with a focus on comprehension and visibility of signal-type traffic control devices, is provided.
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