Skip to main content Skip to Table of Contents
U.S. flag

An official website of the United States government


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.

Accessible Exterior Surfaces

June 21, 1999

Prepared by*:
*Peter W. Axelson, M.S.M.E., A.T.P. - Project Director
Denise Chesney, M.E.B.M.E. - Research Coordinator
Beneficial Designs, Inc.
Santa Cruz, California

Research Team:

  • Patricia Longmuir, M.Sc. - Exercise Science Consultant
  • Ken Coutts, Ph.D. - Exercise Physiology Consultant
  • Stacy Rose - Research Assistant
  • Jeremy Smith - Research Technician
  • Joe Ysselstein, B.S. - Research Assistant

This material is based upon work supported by the U.S. Architectural and Transportation Barriers Compliance Board (the Access Board) under contract number QA96005001. Any opinions, findings, conclusions or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views or policies of the Access Board.


The development of objective surface measurement devices and objective surface testing was conducted with funding from the National Center for Medical Rehabilitation Research in the National Institute of Child Health and Human Development at the National Institutes of Health through Small Business Innovation Research Phase 1 Grant # 1 R43 HD30979-01 and Phase 2 Grant # 2 R44 HD30979-02, “Measurement of Surface Characteristics for Accessibility.”

The authors would like to thank Dr. Ken Coutts for his assistance with the research protocol and data analysis, and Dr. Rory Cooper and Dr. David Gray for their comments on the research protocol and draft technical report.