36 CFR Part 1192 Americans with Disabilities Act (ADA) Accessibility Guidelines for Transportation Vehicles (2016 Non-Rail Vehicle Guidelines)

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.