36 CFR Part 1192 Americans with Disabilities Act (ADA) Accessibility Guidelines for Transportation Vehicles (2016 Non-Rail Vehicle Guidelines)
CHAPTER 3: BUILDING BLOCKS
T301.1 Scope.
The requirements in Chapter 3 shall apply where required by Chapter 2 or where otherwise referenced in any other chapter of the Non-Rail Vehicle Guidelines.
T302.1 General.
Walking surfaces in non-rail vehicles shall comply with T302.
EXCEPTION: Walking surfaces on lifts shall not be required to comply with T302.
T302.2 Slip Resistant.
Walking surfaces shall be slip resistant.
T302.3 Openings.
Openings in walking surfaces shall not allow the passage of a sphere more than 5/8 inch (16 mm) in diameter. Elongated openings shall be placed so that the long dimension is perpendicular to the dominant direction of travel.
EXCEPTIONS: 1. Wheelchair securement system components affixed to walking surfaces shall be permitted to have openings 7/8 inch (22 mm) maximum in width provided that, where such openings are more than 5/8 inch (16 mm) in width, they contrast visually with the rest of the walking surface either light-on-dark or dark-on-light.
2. Ramp and bridgeplate surfaces shall be permitted to have one opening 1½ inches (38 mm) maximum in width and 4½ inches (115 mm) maximum in length to allow the operator to grasp the ramp or bridgeplate for manual operation.
T302.4 Surface Discontinuities.
Surface discontinuities shall be ½ inch (13 mm) high maximum and shall be beveled with a slope not steeper than 1:2.
EXCEPTIONS: 1. Surface discontinuities ¼ inch (6.4 mm) high maximum shall not be required to be beveled.
2. Steps complying with T405 shall be permitted on walking surfaces that are not part of a passenger access route.
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.
T304.1 General.
Operable parts in non-rail vehicles shall comply with T304.
T304.2 Height.
Operable parts shall be located 24 inches (610 mm) minimum and 48 inches (1220 mm) maximum above the floor of non-rail vehicles.
T304.3 Location.
Operable parts provided at a wheelchair space shall be located adjacent to the wheelchair space 24 inches (610 mm) minimum and 36 inches (915 mm) maximum from the rear of the wheelchair space measured horizontally.
T304.4 Operation.
Operable parts shall be operable with one hand and shall not require tight grasping, pinching, or twisting of the wrist. The force required to activate operable parts shall be 5 lbf (22.2 N) maximum.
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