Information was obtained through surveys of ten state departments of transportation, four large U. S. cities, and eighteen departments of public works in Virginia. A sample inventory of curb ramps was made in 15 municipalities in Virginia. Interviews with representatives of agencies serving the handicapped and with engineers in charge of planning and constructing curb ramps were conducted to identify their problems and experiences. Observations were made of mobility classes for the blind and wheelchair users. From the information obtained, guidelines for the design and placement of curb ramps were developed.
The objective was to design and test mixes that might satisfactorily be used to replace the asbestos curb mix. Tentatively, it was recommended that a ...
The 1991 Americans with Disabilities Act Accessibility Guidelines required the installation of a detectable warning surface (raised truncated domes) o...
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United States Department of Transportation
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