* 188.8.131.52 Brake controls for use from a towing vehicle. When specified for vehicles with air
brakes (see 6.2), the vehicle shall be furnished with a system for controlling the brakes from a
towing vehicle (wrecker). The installation shall be complete with air brake couplers, relay
emergency valve with no-bleed-back feature (except when spring applied emergency brake is
furnished), additional air lines and fittings. The service and emergency couplers shall be
mounted on the front in a protected position providing for ready attachment of air hoses from a
towing vehicle. The service and emergency couplers shall be identified and provided with
dummy gladhand couplers with chains. The system shall not compromise conformance to any
Federal Motor Carrier Safety Regulation referenced herein or to any Federal Motor Vehicle
* 3.4.12 Cab. Unless otherwise specified, the chassis manufacturer shall furnish any type of
his standard or optional full width cab. When specified (see 6.2), a cab with a forward tilting
hood and fender assembly, including tilting and locking mechanism, shall be furnished. When
specified (see 6.2), a tilt cab with tilting and locking mechanism shall be furnished. Tilt cab
features shall be in accordance with the Employee Safety and Health Standards of Federal Motor
Carrier Safety Regulation 399, including the first step height which shall be not more than
24 inches. Cab doors shall be equipped with locks, operable from inside the cab through
mechanical linkage, with at least the curbside door equipped with external, key-operated lock.
Drip rails shall be installed above the cab doors. The cab shall have upholstered, full-width,
adjustable seat and back or individual, adjustable driver's seat and individual passenger seat.
When specified for vehicles with air brakes (see 6.2), the driver's seat shall be the
manufacturer's standard air ride suspension type. The color of the upholstery and the interior
finish shall be compatible with the exterior color (see 184.108.40.206). White upholstery shall not be
furnished. Interior lighting shall be provided. Two pairs of seat belts shall be installed. When
specified for tilt cabs (see 6.2), vehicles with a height from the ground to the top of the
windshield of more than 80 inches shall include provisions to facilitate cleaning the windshield.
Provisions shall consist of a bumper step or bumper step cutouts and a grab handle located under
3.4.13 Steering. Power steering shall be provided.
3.4.14 Windshield wipers and washers. The vehicle shall be equipped with dual windshield
wipers and windshield washers. Windshield wipers shall be of the multispeed type and shall be
operated by either air or electric motor(s).