Guidelines for the Application of Crossing Solutions at Roundabouts and Channelized Turn Lanes for Pedestrians with Vision Disabilities (2016) / Chapter Skim
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NCHRP 3-78b: Final Project Report April 2016 6 CONCLUSIONS This document represents the final project report for NCHRP 03-78b: Guidelines for the Application of Crossing Solutions at Roundabouts and Channelized Turn Lanes for Pedestrians with Vision Disabilities. The final report is a compendium to the primary deliverable of this research, the Guidebook for the Application of Crossing Solutions at Roundabouts and Channelized Turn Lanes for Pedestrians with Vision Disabilities.
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NCHRP 3-78b: Final Project Report April 2016 speed locations, and pedestrian decision-making is simplified to dealing with one direction of traffic at a time. Just as with CTL, roundabouts represent an intersection treatment that can enhance safety and serve all road users adequately if designed with all those users in mind.
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NCHRP 3-78b: Final Project Report April 2016 (15 sites) , and some also having an acceleration lane (9 sites)
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NCHRP 3-78b: Final Project Report April 2016 at a roundabout entry and exit radius of around 91.4 m (300 ft)
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NCHRP 3-78b: Final Project Report April 2016 the circulating lane (FHWA TOPR34)
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NCHRP 3-78b: Final Project Report April 2016 evaluated first and foremost as a treatment that reduces vehicle speeds. Those reduced speeds in turn result in increased yielding and increased crossing opportunities, which are linked to reduced delay.
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NCHRP 3-78b: Final Project Report April 2016 extend the full width of the level area, some research participants continued into the street without recognizing that they had done so. When aligning to cross, blind participants were observed to, and reported themselves to, use a combination of cues, including underfoot surfaces and traffic movement.
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NCHRP 3-78b: Final Project Report April 2016 - The focus of the guidebook is on the design of new facilities, and not on the execution and field installation of specific treatments. As such, there is a need to train field crews and inspectors to assure that intersections designed in accordance with this guidance are properly constructed.
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