Chauffeur's License, Louisiana Class D
Chauffeur's License Exam| 260+ Questions with
100% Solutions
freight carrying vehicles and passenger buses must carry either 3 ____, 3____, or
3 ____ and 2____ as warning equipment. - ✔✔flares, electric red lanterns or
red portable reflectors, and 2 12 inch square red cloth flags
flares or fuses are not allowed on these trucks - ✔✔those carrying explosives,
flammable liquids, compressed gases, or those using compressed gas for fuel
warning signals must be places ___ behind and ___ in front of the vehicle and one
____ to the front or rear on the side of the vehicle facing traffic when it breaks
down - ✔✔100 ft, 100ft, 10ft
the draw bar used to tow another vehicle must not be more than ___ except
when transporting objects which can not be easily dismembers like poles, pipes,
or machinery - ✔✔15 ft
the rear view mirror must reflect an image reaching at least ____ behind the
vehicle - ✔✔200ft
vehicles weighing or carrying more than ___ must be equipped with extra brakes -
✔✔3,000 pounds
,___ brakes are a safe way of stopping large vehicle when used correctly -
✔✔air
the three braking systems that make up an air brake system are - ✔✔service
brake, parking brake, and emergency brake
the part of the air brake system which pumps air into the air storage tanks -
✔✔air compressor
the part of the air brake system which controls when the air compressor will
pump air into the air storage tanks - ✔✔air compressor governor
the part of the air brake system which is operated by turning a quarter turn or by
pulling a cable and which must be drained manually at the end of the day -
✔✔manual air tank drain
the part of the air brake system in which water and oil are automatically expelled
- ✔✔automatice air tank drain
the ___ of the air brake system protects the tanks and the rest of the system from
too much pressure. it is usually set at 150 psi. if it releases air, something is wrong
- ✔✔safety valve
the ___ part of the air brake system tells you how much pressure is left in the air
tanks - ✔✔supply pressure gauges
,the ____ shows you how much air pressure you are applying to the breaks -
✔✔application pressure gauge
if the air pressure in the tanks falls below ___, the low air pressure warning will
come on. - ✔✔60psi
___ brakes are held back by air pressure and are the mechanical force which
keeps the emergency and parking brakes in place - ✔✔spring brakes
in newer vehicles, you engage the parking breaks by using this knob -
✔✔diamond-shaped, yellow, push-pull knob
never push the break pedal down when the ___ brakes are on - ✔✔spring
breaks
the first step to checking the air brakes is to see if the air pressure drops more
than ____ pounds in ___ minute - ✔✔3 pounds in 1 minute
the second step to checking the air brakes is to ____ - ✔✔make sure the low
air pressure warning signals are working
the third step of checking the air brakes is to make sure the parking brake valve
closes at ____psi - ✔✔20-40 psi
7 additional things that must be checked when doing an air brake check -
✔✔1)air compressor drive belt
, 2) manual slack adjusters on S-cam brakes
3) brake drums, linings, and hoses
4) rate of air pressure buildup
5) air compressor governor cut-in and cut-out pressures
6) parking brake
7) service brakes
2 methods of emergency breaking - ✔✔controlled or stab
the type of emergency breaking in which you put on the brakes as hard as you can
without locking the wheels or turning the steering wheel - ✔✔controlled
braking
the type of emergency braking in which you press the break pedal as hard as you
can, let up when the wheels lock, and push on the brakes again when the vehicle
starts rolling - ✔✔stab breaking
with air brakes it takes ____ for the air to flow through the lines to the brakes -
✔✔1/2 second or more
the equation which equals the total stopping distance for vehicles with air brakes
- ✔✔perception distance + reaction distance + brake lag distance + effective
braking distance
if the low air pressure warning for the air brake system comes on you should __ -
✔✔stop and safely park as soon as possible
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