A-A-58009B
2.3.4.2 Warning light color. When specified (see 6.2), the rearward, red strobe lights shall be
replaced with amber. When specified (see 6.2), all red warning and strobe lights shall be
replaced with blue.
2.3.4.3 Headlight flashing system. A high beam, alternating/flashing, headlight system shall be
provided. The headlight flasher shall be separately switched from the warning light panel.
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 sufficient for reading maps or
manuals.
2.3.6.2 Compartment lights. White lighting sufficient to provide an average minimum
illumination of 1.0 footcandle shall be provided in each compartment greater than 4.0 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 Radio circuit. The vehicle shall have a separate 30 amp circuit, with breaker and a wire
routed to a space provided between the driver and crew chief for a purchaser provided radio.
2.4 Driving and crew areas.
2.4.1 Cab. The vehicle shall have a tilting or non-tilting cab for at least four persons with at least
four doors. The cab shall be of all aluminum or all stainless steel construction. Aluminum
thickness shall be at least 0.125 inches, except for door skins, which shall be at least 0.090
inches. Stainless steel thickness shall be at least 0.090 inches. The cab shall have a wrap-around
windshield and a matching contour cab face. Cab door openings shall extend for the full vertical
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