| http://www.w3.org/ns/prov#value | - Dr. Bentzen and Ms. Barlow regularly present sessions and seminars on access issues for pedestrians who are blind or who have low vision at conferences of the Transportation Research Board, the Institute of Transportation Engineers, the Association for Education and Rehabilitation of the Blind and Visually Impaired, the American Council of the Blind, and other organizations, and have written exten
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