While seated, the driver shall be able to make seat adjustments by hand without complexity, excessive effort or being pinched. Adjustment mechanisms shall hold the adjustments and shall not be subject to inadvertent changes.
Seat Structure and Materials
Cushions shall be fully padded with at least 3 in. of materials in the seating areas at the bottom and back.
The bus shall be equipped with a corrosion-resistant, outside rearview mirrors mounted with stable supports to minimize vibration. Mirrors shall be firmly attached to the bus to minimize vibration and to prevent loss of adjustment with a breakaway mounting system. Mirrors shall permit the driver to view the roadway along the sides of the bus, including the rear wheels. Mirrors should be positioned to prevent blind spots.
Mirrors shall retract or fold sufficiently to allow bus washing operations but avoid contact with windshield.
Breakaway mounting system.
Spring loaded mirror heads auto return.
Flat Mirrors on Both Sides
The bus shall be equipped with two flat outside mirrors, each with not less than 50 sq in. of reflective surface. The mirrors shall be located so as to provide the driver a view to the rear along both sides of the bus and shall be adjustable both in the horizontal and vertical directions to view the rearward scene. The roadside rearview mirror shall be positioned so that the driver’s line of sight is not obstructed.
Combination of flat and convex mirrors referred to as transit-specific.
Combination of Mirrors and CCTV Cameras
The bus shall be equipped with a combination of mirrors and CCTV cameras. The configuration will be transit-Agency specific.
The curbside rearview mirror shall be mounted so that its lower edge is no less than 76 in. above the street surface. A lower mount may be required due to requested mirror configuration requests
Standard mirror, not heated, not remote adjustment.
Remote Adjustment of Curbside Mirror
The driver shall be able to adjust the street-side mirror remotely while seated in the driving position. The control for remote positioning of the mirror shall be a single switch or device.
Heated Street-Side Mirrors
The street-side mirrors shall have heaters that energize whenever the driver’s heater and/or defroster is activated, or can be activated independently.
Mirrors with external mounted turn signal, both sides.
TS 1.1.45Interior Mirrors
Mirrors shall be provided for the driver to observe passengers throughout the bus without leaving the seat and without shoulder movement. The driver shall be able to observe passengers in the front/entrance and rear/exit areas, anywhere in the aisle, and in the rear seats.
[Use with 35-ft length] A minimum of 8000 sq in. of window area, including operator and door windows, shall be required on each side of the standard configuration bus.
[Use with 40-ft length] A minimum of 10,000 sq in. of window area, including operator and door windows, shall be required on each side of the standard configuration bus.
[Use with 45-ft length] A minimum of 12,000 sq in. of window area, including operator and door windows, shall be required on each side of the standard configuration bus.
[Use with 60-ft length] A minimum of 16,000 sq in. of window area, including operator and door windows, shall be required on each side of the standard configuration bus.
The windshield shall permit an operator’s field of view as referenced in SAE Recommended Practice J1050. The vertically upward view shall be a minimum of 14 degrees, measured above the horizontal and excluding any shaded band. The vertically downward view shall permit detection of an object 3½ ft high no more than 2 ft in front of the bus. The horizontal view shall be a minimum of 90 degrees above the line of sight. Any binocular obscuration due to a center divider may be ignored when determining the 90-degree requirement, provided that the divider does not exceed a 3-degree angle in the operator’s field of view. Windshield pillars shall not exceed 10 degrees of binocular obscuration. The windshield shall be designed and installed to minimize external glare as well as reflections from inside the bus.
The windshield shall be easily replaceable by removing zip-locks from the windshield retaining moldings. Bonded-in-place windshields shall not be used. Winglets may be bonded.