attachment 2 section i ? technical specifications commuter coach ...

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ATTACHMENT 2
Operation of, and power to, the passenger door shall be completely controlled by a switch located in
close proximity to the driver to the left of the steering wheel. A control or valve in the driver's
compartment shall shut off the power to, and/or dump the power from the front door mechanism to
permit manual operation of the front door with the coach shut down. A toggle switch on the exterior of
the coach shall permit opening of the front door. The switch shall be concealed behind an unmarked
door. The door switch cover shall be spring loaded so as to be held in the closed position and be
located just behind the entrance door.
2.9.1.2 ACTUATORS
The nominal door opening and closing speed shall be in the 3-5 second range. The maximum door
opening and closing speeds will be regulated using fixed, maintenance free orifices and airline sizes. If
required, door speeds can be decreased with the addition of a flow-restricting device. Actuators and the
complete door mechanism shall be concealed from passengers, but shall be easily accessible for
servicing.
2.9.1.3 MANUAL OPERATION
In the event of an emergency, it shall be possible to open the doors manually from inside the coach after
actuating an unlocking device. Any signage detailing the method of operation of door in an emergency
shall not reference the “emergency operation” of the door. All references shall detail the “manual”
operation of the door.
2.9.2 WINDSHIELD WIPERS AND WASHERS
2.9.2.1 WINDSHIELD WIPERS
The coach shall be equipped with variable speed electric windshield wipers for each half of the
windshield with separate controls for each side. No part of the windshield wiper mechanism shall be
damaged by manual manipulation of the arms. Both wipers shall park along the center vertical edges of
the windshield glass. Windshield wiper motors and mechanisms shall be easily accessible for repairs or
service from outside the coach only and shall be removable as complete units. Mounting shall preclude
cracking or damage to the windshield frame. Power supply to the wiper motors shall be provided
through a dedicated circuit.
An intermittent operation feature for each wiper shall be provided with a variable time delay. After
each pause, the wiper shall make one complete cycle across the windshield surface and return to the
park position automatically.
2.9.2.2 WINDSHIELD WASHERS
The windshield washer system shall deposit washing fluid on the windshield and, when used with the
wipers, shall evenly and completely wet the entire wiped area. Two separate washer pumps are to be
provided. Wet type wiper arms shall not be permitted.