LOUISIANA CLASS D CHAUFFEUR LICENSE
EXAM ACTUAL CORRECT QUESTIONS AND
VERIFIED DETAILED ANSWERS| CURRENTLY
TESTING VERSION | ALREADY GRADED
A+|NEWEST|EXPERT VERIFIED FOR
GUARANTEED PASS 2026/2027
___ 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
1|Page
,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
2|Page
,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
brakes can fail or fade from ___ caused by ___
excessive heat caused by using them too much or improper adjustment
any time you park you should use the parking brake except for these 2 exceptions
the brakes are very hot or in the brakes are wet and the temperature is freezing
Class D license is for anyone driving a vehicle or combined set of vehicles in this weight
range _____, as long as they are not carrying hazardous materials
3|Page
, 10,001-26,001 pounds
A Class D license allows for a driver-for-fire to drive any vehicle fitting into the Class __
requirements
E
you must be ____ years old to receive a class D license
17
the maximum width for all vehicles except buses is ___
8 feet
the maximum width for buses is ____
8ft 6in
the load may not project more than ___ beyond the width of the body
6in
the maximum height for all vehicles is ___
13ft 6in
the maximum length for any single vehicle including its load is ___
40ft
the maximum length for a truck-tractor and trailer combination is ___
65ft
the maximum height, length, and width requirements do not apply to ____, ______, or
____ as long as they are operating during daylight
auto carriers, trailers hauling poles or pilings, trailers hauling logs
when securing a load, the contents must not be allowed to ____, ____, _____, or ______
and the cover must be securely fastened
drop, shift, leak, otherwise escape
4|Page
EXAM ACTUAL CORRECT QUESTIONS AND
VERIFIED DETAILED ANSWERS| CURRENTLY
TESTING VERSION | ALREADY GRADED
A+|NEWEST|EXPERT VERIFIED FOR
GUARANTEED PASS 2026/2027
___ 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
1|Page
,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
2|Page
,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
brakes can fail or fade from ___ caused by ___
excessive heat caused by using them too much or improper adjustment
any time you park you should use the parking brake except for these 2 exceptions
the brakes are very hot or in the brakes are wet and the temperature is freezing
Class D license is for anyone driving a vehicle or combined set of vehicles in this weight
range _____, as long as they are not carrying hazardous materials
3|Page
, 10,001-26,001 pounds
A Class D license allows for a driver-for-fire to drive any vehicle fitting into the Class __
requirements
E
you must be ____ years old to receive a class D license
17
the maximum width for all vehicles except buses is ___
8 feet
the maximum width for buses is ____
8ft 6in
the load may not project more than ___ beyond the width of the body
6in
the maximum height for all vehicles is ___
13ft 6in
the maximum length for any single vehicle including its load is ___
40ft
the maximum length for a truck-tractor and trailer combination is ___
65ft
the maximum height, length, and width requirements do not apply to ____, ______, or
____ as long as they are operating during daylight
auto carriers, trailers hauling poles or pilings, trailers hauling logs
when securing a load, the contents must not be allowed to ____, ____, _____, or ______
and the cover must be securely fastened
drop, shift, leak, otherwise escape
4|Page
