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The Public Right-of-Way Accessibility Guidelines (PROWAG) rulemaking has concluded. The PROWAG final rule has been published in the Federal Register. Please visit the Access Board’s PROWAG page for the guidelines.

Technical Assistance

The Access Board provides confidential technical assistance on its accessibility guidelines and standards and accessible design through its helpline at 1-202-272-0080, extension 3, and by email at from 10:00 a.m. to 5:00 p.m. (ET) weekdays. Accessibility specialists are available to answer questions on accessibility as it relates to the built environment, recreation and outdoor areas, streets and sidewalks, transportation vehicles and vessels, information and communication technology, and medical diagnostic equipment.

The Board also provides guidance documents that explain requirements in the current editions of the ADA Guidelines and ABA Standards. These guidance documents offer clearly labeled recommendations for best practices that exceed the minimum requirements. The Board also provides animations to help design professionals understand the reason and method of application of the requirements in the standards. In addition, technical assistance documents that review design recommendations are available. For information on and to request training, visit the Board's Training page.

Questions? (stylized graphic)

Technical Assistance by Phone

Phone 1-202-272-0080, extension 3 from 10:00 a.m. to 5:00 p.m. (ET) weekdays for all technical assistance needs regarding the guidelines and standards covered by the Americans with Disabilities Act (ADA), Architectural Barriers Act (ABA), and Section 508 of the Rehabilitation Act.

refreshable braille keyboard (photo shows fingers on the i/o controls, and the edge of a computer keyboard positioned on top)

Information & Communication Technology

Email for questions on the Board’s Revised 508 Standards for information and communication technology (ICT).  Additional 508 resources are available at:

medical imaging machine (photo shows empty patient table at tunnel entrance of large device)


Email for questions about accessibility standards for medical diagnostic equipment, including exam tables, scales, x-ray, and other equipment.

two people in wheelchairs at a campsite


Email for questions about outdoor areas, including trails, beaches, and picnic and camping areas.

cruise ship at sea (photo is from a birds eye perspective)

Passenger Vessels

Email for questions about passenger vessels, including cruise ships, ferries, and tenders intended to transport passengers.

cane trailing sidewalk (photo closeup on cane with red stripe and white bulb at end, in front of a blurred shoe)

Public Rights-of-Way

Email for questions about public rights-of-way, including sidewalks, street crossings, and other pedestrian used features.