A-A-58028D
2.3.5 Audible warning devices.
2.3.5.1 Siren. The vehicle shall be equipped with an electronic siren system. The amplifier unit
shall include volume control and selection of "Radio," "PA," "Manual," "Yelp," "Wail," and "Hi-
Lo" (European) modes, and a magnetic noise canceling microphone. The amplifier, microphone,
and controls shall be within reach of the driver and right front passenger. Siren activating foot
switches shall be located in front of the driver and the right front passenger. The siren speaker
shall be rated at 100 watts minimum and shall be located in a guarded position in the front
bumper.
2.3.5.2 Horn. Dual forward facing air horns shall be installed in protected locations near the front
of the truck. Air horn activating foot switches shall be located in front of the driver and the right
front passenger.
2.3.6 Work lighting.
2.3.6.1 Cab interior lights. Cab interior light levels shall be a minimum of 2 foot-candles.
2.3.6.2 Compartment lights. White lighting sufficient to provide an average minimum
illumination of 2.0 foot-candle shall be provided in each compartment greater than 4 cubic feet
and having an opening greater than 144 square inches. Where a shelf is provided, this
illumination shall be provided both above and below the shelf. Lights shall automatically
illuminate only when the respective doors are opened.
2.3.6.3 Ladder, step, and area lights. Non-glare white lighting shall be provided at ladders and
access steps where personnel work or climb during night operations. These area lights shall be
controlled with switches on the cab instrument panel and near the light sources.
2.3.7 Scene lights. A total of 8 12-volt LED high-mounted floodlights shall be provided to
illuminate the work areas around the tanker: two on each side, two at the rear, and two in the
front. Individual switches shall be located in the work areas and on the instrument panel. A
switch shall be provided to control the lights on the left side of the tanker, a second switch shall
be provided to control the lights on the right side of the tanker, and a third switch shall be
provided to control the lights at the rear of the tanker. A separate switch for the front lights shall
be located on the instrument panel only. Three way switches shall be used.
2.3.8 Radio circuit. The vehicle shall have two separate 30 amp circuits, with breakers and wires
routed to a space provided between the driver and crew chief for a purchaser provided radio. The
radio circuit wires shall be tagged for easy identification.
2.3.9 Radio Antennas. An antenna mounting base with coaxial cable and waterproof cap shall be
provided for 2 way radios. The mount shall be located on the cab roof to the rear of the front
seats and will be clear of any obstructions. The cable shall be routed to the center console,
length of the cable shall be determined at Post Award. Two shall be provided.
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