36 CFR Part 1192 Americans with Disabilities Act (ADA) Accessibility Guidelines for Transportation Vehicles (2016 Non-Rail Vehicle Guidelines)
T303 Handrails, Stanchions, and Handholds
T303.1 General.
Handrails, stanchions, and handholds in non-rail vehicles shall comply with T303.
T303.2 Edges.
Edges shall be rounded or eased.
T303.3 Cross Section.
Gripping surfaces shall have a cross section complying with T303.3.
T303.3.1 Seat-Back Handhold Cross Section.
The cross section of seat-back handholds shall have an outside diameter of 7/8 inches (22 mm) minimum and 2 inches (50 mm) maximum.
T303.3.2 Handrail and Stanchion Circular Cross Section.
Handrails and stanchions with a circular cross section shall have an outside diameter of 1¼ inches (32 mm) minimum and 2 inches (50 mm) maximum.
T303.3.3 Handrail and Stanchion Non-Circular Cross Section.
Handrails and stanchions with a non-circular cross section shall have a perimeter dimension of 4 inches (100 mm) minimum and 6¼ inches (160 mm) maximum, and a cross section dimension of 2¼ inches (57 mm) maximum.
T303.4 Clearance.
Clearance between gripping surfaces and adjacent surfaces shall be 1½ inches (38 mm) minimum.
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