* 18.104.22.168 Spare wheel or rim. When specified (see 6.2), a spare wheel or rim shall be
furnished. When a spare tire assembly is specified (see 22.214.171.124), a spare tire wheel or rim shall
* 126.96.36.199 Spare tire assembly. When specified (see 6.2), a spare tire assembly shall be
furnished and shall be stowed securely on the vehicle for shipment. The spare tire assembly
shall include an inflated spare tire mounted on the spare wheel or rim. The spare tire shall be of
the same size, tread design, and load range (ply rating) as the tires furnished on the vehicle.
* 3.4.11 Brakes. The brakes shall conform to Federal Motor Carrier Safety Regulations
393.40 through 393.42 and 393.45 through 393.52. When available as the manufacturer's
standard or as an option, brake linings shall be of nonasbestos material.
188.8.131.52 Power-hydraulic brakes. Unless otherwise specified (see 184.108.40.206), the vehicle shall
be equipped with power assisted, hydraulically actuated, four-wheel service brakes.
* 220.127.116.11.1 Split hydraulic brake system. The power-hydraulic brake system shall be so
arranged as to provide separate systems for at least two wheels and so designed and constructed
that rupture or leakage type failure of any single pressure component of the service brake system,
except structural failures of the brake master cylinder body, effectiveness indicator body, or
other housing common to the divided system, will not result in complete loss of function of the
vehicle brakes when force on the brake pedal is continued. "Pressure component" means any
internal component of the brake master cylinder or master control unit, wheel brake cylinder,
brake line, brake hose, or equivalent, except power assist components.
* 18.104.22.168.2 Indicator light. The split hydraulic brake system shall be equipped with an
electrically operated red light mounted on the instrument panel to indicate system effectiveness.
The light shall have an area of not less than 0.196 square inch. It shall illuminate before or upon
application of the brakes when an actuating-pressure component of the system has sustained a
loss of pressure. The indicator light system shall include a means for testing by the vehicle
operator to assure that the light bulb is operable.
22.214.171.124 Air brakes. When specified (see 6.2), the vehicle shall be equipped with
four-wheel, full air brakes. The braking system, complete with all necessary components, shall