A-A-58009B
height of the side panels. Steps and handrails shall be provided for all crew doors, and at least
one grab handle shall be provided for each crew member, located inside the cab for use while the
vehicle is in motion.
2.4.1.1 Rear crew compartment. The rear crew compartment shall have a raised roof with
visibility above the forward cab roof, to the sides, and to the rear through the recessed walkway
of the utility body. Floor to ceiling height in the rear crew compartment shall be not less than 70
inches clear.
2.4.1.2 Seats. The driver's seat shall be of an adjustable air suspension design. The crew member
seats shall be of a non-suspension design. When specified (see 6.2), each crew member seat shall
have a backrest and brackets designed to store a one-hour capacity Interspiro self-contained
breathing apparatus (SCBA). Each seat shall be provided with a Type 2 seat belt assembly (i.e.,
3-point restraint) in accordance with Code of Federal Regulations (CFR) 49 CFR 571.209.
2.4.1.3 Cab interior sound level. The maximum sound level at any seat location shall not exceed
83 dBA without any warning devices in operation, as measured in accordance with 49 CFR
393.94(c), "Vehicular interior noise levels test procedure," except that the test shall be performed
with the vehicle traveling at a steady speed of 45 mph on a level, hard, smooth surface road.
2.4.1.4 Windshield and windows. The windshield and windows shall be of tinted safety glass.
2.4.1.5 Mirrors. Combination flat and convex outside rearview mirrors shall be installed on each
side of the cab, mounted on fold-back west coast style brackets. The flat mirrors shall be of the
motorized remote control type, providing not less than 60° horizontal rotational viewing range.
The flat mirrors shall also have electrically heated heads. Mirror remote and heating controls
shall be located on the instrument panel within reach of the seated driver.
2.4.1.6 Climate control system. The offeror/contractor's standard heater/defroster system shall be
provided. Unless otherwise specified (see 6.2), the offeror/contractor's standard air conditioning
system shall also be provided. In 100° F ambient temperature with 50 percent relative humidity
and at maximum compressor speed, the air conditioning system shall cool the fully occupied cab
to 75° F within 30 minutes.
2.4.1.7 Instruments and controls. Gauges shall be provided for oil pressure, coolant temperature,
and automatic transmission temperature. In addition to the instruments and controls required by
12-3.4 of NFPA 1901, the following shall be provided within convenient reach of the seated
driver:
a. Master warning light control switch,
b. Work light switch(es), and
c. Compartment "Door Open" warning light and intermittent alarm that sounds when a
compartment door is open and the parking brakes are released or the transmission is in any
position other than neutral.
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