Chapter T5: Circulation Paths and Doorways on Buses, Over-the-Road Buses, and Vans

T501 General.  The technical requirements in Chapter T5 shall apply where required by Chapter T2.

T502 Circulation Paths

T502.1 General.  Circulation paths connecting wheelchair spaces to doorways shall comply with T502.

T502.2 Clear Width.  The clear width of circulation paths connecting wheelchair spaces to doorways shall be 865 mm (34 inches) minimum from the vehicle floor to a height 1015 mm (40 inches) minimum above the vehicle floor.  From a height 1015 mm (40 inches) minimum above the vehicle floor, the clear width of circulation paths shall be 760 mm (30 inches) minimum to the height specified in Table T502.

Table T502.2 Circulation Path Clear Width
Vehicle LengthMinimum Height Above 1015 mm (40 inches)
Vehicles 6.7 m (22 feet) or less 1420 mm (56 inches) above vehicle floor

Over-the-road buses

1650 mm (65 inches) above vehicle floor

Other vehicles more than 6.7 m (22 feet)

1725 mm (68 inches) above vehicle floor

Advisory T502.2 Clear Width.  Using a 3D model or other computer design tool that depicts an occupied wheelchair moving from the vehicle doorway to the wheelchair space will help to ensure that the clear width of the circulation path complies with T502.2.

 

T502.2 Clear Width
For vehicles 6.7 m long or less, circulation path clear width shown to be 865 mm (34 inches) minimum from the vehicle floor to a height 1015 mm (40 inches) minimum above the vehicle floor, and 760 mm (30 inches) minimum above this height to a height 1420 mm (56 inches) minimum.
(a) vehicles 6.7 m or less
For over-the-road buses, circulation path clear width shown to be 865 mm (34 inches) minimum from the vehicle floor to a height 1015 mm (40 inches) minimum above the vehicle floor, and 760 mm (30 inches) minimum above this height to a height 1650 mm (65 inches) minimum.
(b) over-the-road bus
For vehicles more than 6.7 m long, circulation path clear width shown to be 865 mm (34 inches) minimum from the vehicle floor to a height 1015 mm (40 inches) minimum above the vehicle floor, and 760 mm (30 inches) minimum above this height to a height 1725 mm (68 inches) minimum.
(c) vehicles more than 6.7 m

T502.3 Features on Circulation Paths.  Features on circulation paths connecting wheelchair spaces to doorways shall be located so as to not interfere with the maneuvering of wheelchairs.  Stanchions located directly behind the driver seat shall terminate at the surface of aisle facing seats where provided, or shall be turned away from the circulation path below the driver seat.  Where provided on vehicles, fare collection devices shall be located as close to the dashboard as possible.

T503 Doorways

T503.1 Doorways with Lifts or Ramps.  The vertical clearance at doorways with lifts or ramps shall be in accordance with Table T503.1 measured vertically from the top of the door opening to the vehicle floor, or to the surface of the lift or to the highest point of the ramp when deployed to the vehicle floor level.

Table T503.1 Vertical Clearance at Doorways with Lifts or Ramps
Vehicle LengthMinimum Vertical Clearance
Vehicles 6.7 m (22 feet) or less 1420 mm (56 inches)
Over-the-road buses 1650 mm (65 inches)
Other vehicles more than 6.7 m (22 feet) 1725 mm (68 inches)

T503.2 Doorways with Level Entry Boarding.  Doorways with level entry boarding shall comply with T503.2.

T503.2.1 Clear Width.  Doorways shall provide a clear opening of 810 mm (32 inches) minimum.

T503.2.2 Thresholds.  Thresholds at doorways shall be marked by a strip.  The strip shall be 25 mm (1 inch) wide minimum and shall contrast visually with the rest of the circulation path surface either light-on-dark or dark-on-light.

T503.3 Doorways on Over-the-Road Buses.  On over-the road buses, doorways with steps shall provide a clear opening 760 mm (30 inches) minimum from the lowest step tread to a height 1220 mm (48 inches) above the lowest step tread.  Where compliance is not structurally feasible, the clear opening shall be permitted to be 685 mm (27 inches).  The clear opening shall be permitted to taper to 457 mm (18 inches) minimum from a height 1220 mm (48 inches) above the lowest step tread to the top of the doorway.  Hinges and other door mechanisms shall be permitted to protrude 100 mm (4 inches) maximum into the clear opening.

T504 Steps

T504.1 General.  Steps shall comply with T504.

T504.2 Surfaces.  Step tread surfaces shall comply with T802.

T504.3 Visual Contrast.  The outer edge of step treads shall be marked by a strip.  The strip shall be 25 mm (1 inch) wide minimum and shall contrast visually with the rest of the step tread or circulation path surface either light-on-dark or dark-on-light.

T505 Handrails, Stanchions, and Handholds

T505.1 General.  Handrails, stanchions, and handholds shall comply with T505 and T804.

T505.2 Doorways.  Handrails and stanchions at passenger doorways shall be configured so that passengers with disabilities can grasp the handrails and stanchions from outside the vehicle, and use the handrails and stanchions throughout the boarding and alighting process.

T505.3 Fare Collection Devices.  Handrails at fare collection devices shall be configured so that passengers with disabilities can use the handrail for support when using the fare collection device.

T505.4 Circulation Paths.  Handrails and stanchions along circulation paths shall be configured so that passengers with disabilities can use the handrails when moving through the vehicle.

T505.5 Seats.  Handholds and stanchions on the backs of forward and rear facing seats shall be located directly adjacent to the aisle so that passengers with disabilities can use the handholds and handrails when moving from the aisles to the seats.