Apta (Draft) Specification For: 30-ft, 35-ft, 40-ft, 45-ft, 60-foot (articulated) Transit Buses

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48.6Driver foot controls

Accelerator and brake pedals shall be designed for ankle motion. Foot surfaces of the pedals shall be faced with wear-resistant, nonskid, replaceable material.

Pedal angle

The vertical angle of the accelerator and brake pedals shall be determined from a horizontal plane regardless of the slope of the cab floor. The accelerator and brake pedals shall be positioned at an angle of 37 to 45 degrees at the point of initiation of contact and extend downward to an angle of 10 to 18 degrees at full throttle.

The location of the brake and accelerator pedals shall be determined by the manufacturer, based on space needs, visibility, lower edge of windshield, and vertical H-point.

Pedal dimensions and position

The floor-mounted accelerator pedal shall be 10 to 12 in. long and 3 to 4 in. wide. Clearance around the pedal must allow for no interference precluding operation.


1 to 2 in. between brake and accelerator pedals

The accelerator and brake pedals shall be positioned such that the spacing between them, measured at the heel of the pedals, is between 1 and 2 in. Both pedals should be located on the same plane coincident to the surface of the pedals.


Adjustable brake and accelerator pedals

Both pedals shall be adjustable forward and rearward a minimum of 3 inches. The adjustment shall be made by use of a dash-mounted toggle or rocker switch. The switch shall be clearly labeled to identify it as pedal adjustment and shall be within easy reach of the driver. Pedal adjustment shall be enabled only when the bus is stationary and the parking brake engaged.


The force to depress the accelerator pedal shall be measured at the midpoint of the accelerator. The accelerator force should be a minimum of 5 pounds and not exceed 9 pounds.



Brake force

The force to depress the brake pedal shall be measured at the midpoint of the brake pedal. The brake pedal force shall be no more than 10 pounds to activate the brake.


Adjustable pedals foot control

48.9Driver foot switches

Floor-mounted foot control platform

The angle of the turn signal platform shall be determined from a horizontal plane, regardless of the slope of the cab floor. The turn signal platform shall be angled at a minimum of 10 degrees and a maximum of 37 degrees. It shall be located no closer to the seat front than the heel point of the accelerator pedal.

Turn signal controls

Turn signal controls shall be floor-mounted, foot-controlled, water-resistant, heavy-duty, momentary contact switches.


Adjustable turn signal platform

Foot switch control

The control switches for the turn signals shall be mounted on an inclined, floor-mounted stainless steel enclosure, located to the left of the steering column. The location and design of this enclosure shall be such that foot room for the operator is not impeded. The inclined mounting surface shall be skid-resistant. All other signals, including high beam and public address system shall be in approved location.

The foot switches shall be UL-listed, heavy-duty type, of a rugged, corrosion-resistant metal construction. The foot switches for the directionals shall be momentary type, while those for the P.A. and the high beam shall be latching type. The spacing of the switches shall be such that inadvertent simultaneous deflection of switches is prevented.


Other floor-mounted controls

The following may be floor mounted with the same requirements as the turn signal controls.

  • hazard

  • silent alarm

  • PA system

IP 49.Driver’s amenities

49.1Coat hanger


Coat hanger

A suitable hanger shall be installed in a convenient, approved location for the driver’s coat.


Coat hook

A hook and loop shall be provided to secure the driver’s coat.

49.2Drink holder


No drink holder

Drink holder

A device shall be provided to securely hold the driver’s drink container, which may vary widely in diameter. It must be mounted within easy reach of the driver and must have sufficient vertical clearance for easy removal of the container. When the container is in the device, the driver’s view of the road must not be obstructed, and leakage from the container must not fall on any switches, gauges or controls.

49.3Storage box


Storage box

An enclosed driver storage area shall be provided with a positive latching door and/or lock. The minimum size is 2750 cubic in.


No storage box

IP 50.Windshield wipers and washers

50.1Windshield wipers

The bus shall be equipped with a windshield wiper for each half of the windshield. At 60 mph, no more than 10 percent of the wiped area shall be lost due to windshield wiper lift. Both wipers shall park along the edges of the windshield glass. Windshield wiper motors and mechanisms shall be easily accessible for repairs or service. The fastener that secures the wiper arm to the drive mechanism shall be corrosion-resistant.


Single-control, electric two-speed intermittent wiper

Wiper powered by compressed air

If powered by air, exhaust from the wiper motors shall be muffled or piped under the floor of the bus.


Single control for air operated system

Dual controls for air operated system

Intermittent wiper with variable control

A variable-speed feature shall be provided to allow adjustment of wiper speed for each side of the windshield between approximately five and 25 cycles per minute.


Multiple wiper systems and controls


Non-synchronized wipers

For non-synchronized wipers, separate controls for each side shall be supplied.

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