What are the implications of universal access for street and intersection design and regulation?
Universal access requires that bicyclists and pedestrians be reasonably accommodated wherever they are permitted to travel. For all practical purposes this requires safe accommodation on every street and across every intersection. Good engineering guidelines exist for ADA-accessible sidewalks, signals, medians, and curb configurations for pedestrians. Useful bicycle transportation typically involves travel on roadways and is accommodated by a combination of education, enforcement, and context-sensitive engineering.
