1|Page
CDL EXAM VERSION 3 LATEST 2026 ACTUAL EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
How can you test the low pressure warning signal? - ANSWER-
shut the engine off when you have enough pressure that the low
pressure warning signal is not on. turn the electrical power on and
step on and off the brake pedal to reduce the air pressure in the
tank. the warning signal must come one before the pressure
drops to less than 60psi
How can you check that the spring brakes come on
automatically? - ANSWER-reduce the air pressure in the tank by
fanning the brake peddle, the tractor protection valve and parking
brake valve should close. this should cause the spring brake to
come on
What are the maximum leakage rates? - ANSWER-less than 2psi
in one minute in single vehicles, less than 3psi in one minute for
combination vehicles. then apply 90 psi or more with the brake
pedal, if the drop is more than 3psi for singles or 4psi for combo's
the air loss rate is too much
,2|Page
Why should you be in the proper gear before starting down a hill?
- ANSWER-You will not be able to shift into a lower gear once you
are going. Forcing an automatic transmission into a lower gear at
high speed could damage the transmission, so you don't have to
wear your brakes out slowing down
What factors can cause brakes to fade or fail? - ANSWER-Over
heating, low air pressure, and not relying on the engine braking
effect.
The use of brakes on a long, steep downgrade is only a
supplement to the braking effect of the engine. True or False? -
ANSWER-True
How often should you drain air tanks? - ANSWER-daily
How should you brake when you drive a tractor-trailer
combination with ABS? - ANSWER-Use only the braking force
necessary to stop safely and stay in control. I.E. Normally
,3|Page
You still have normal brake functions if your ABS is not working.
True or False? - ANSWER-True, without ABS, you still have
normal brake functions
What two things are important to prevent rollover? - ANSWER-
Keep cargo as close to the ground as possible and drive slowly
around turns.
When you turn suddenly while pulling doubles, which trailer is
most likely to turn over? - ANSWER-The rear trailer is twice as
likely to turn over.
Why should you not use the trailer hand brake to straighten out a
jackknifing trailer? - ANSWER-The brakes on the trailer wheels
cause the skid -- release so the trailer wheels will grip the road
again.
What is off tracking? - ANSWER-the rear wheels follow a different
path than the front wheels
, 4|Page
When you back a trailer, you should position your vehicle so you
can back in a curved path to the drivers side. True or False? -
ANSWER-When backing a trailer, you turn the steering wheel in
the opposite direction. Once the trailer starts to turn, you must
turn the wheel the other way to follow the trailer.
Whenever you back up with a trailer, try to position your vehicle
so you can back in a straight line.
True. If you must back on a curved path, back to the driver's
side so you can see.
What type of trailers can get stuck on railroad-highway crossings?
- ANSWER-Low slung units ( lowboy, car carrier, moving van,
possum-belly livestock trailer )
Single-axle tractor pulling a long trailer with its landing gear
set to accommodate a tandem-axle tractor.
CDL EXAM VERSION 3 LATEST 2026 ACTUAL EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
How can you test the low pressure warning signal? - ANSWER-
shut the engine off when you have enough pressure that the low
pressure warning signal is not on. turn the electrical power on and
step on and off the brake pedal to reduce the air pressure in the
tank. the warning signal must come one before the pressure
drops to less than 60psi
How can you check that the spring brakes come on
automatically? - ANSWER-reduce the air pressure in the tank by
fanning the brake peddle, the tractor protection valve and parking
brake valve should close. this should cause the spring brake to
come on
What are the maximum leakage rates? - ANSWER-less than 2psi
in one minute in single vehicles, less than 3psi in one minute for
combination vehicles. then apply 90 psi or more with the brake
pedal, if the drop is more than 3psi for singles or 4psi for combo's
the air loss rate is too much
,2|Page
Why should you be in the proper gear before starting down a hill?
- ANSWER-You will not be able to shift into a lower gear once you
are going. Forcing an automatic transmission into a lower gear at
high speed could damage the transmission, so you don't have to
wear your brakes out slowing down
What factors can cause brakes to fade or fail? - ANSWER-Over
heating, low air pressure, and not relying on the engine braking
effect.
The use of brakes on a long, steep downgrade is only a
supplement to the braking effect of the engine. True or False? -
ANSWER-True
How often should you drain air tanks? - ANSWER-daily
How should you brake when you drive a tractor-trailer
combination with ABS? - ANSWER-Use only the braking force
necessary to stop safely and stay in control. I.E. Normally
,3|Page
You still have normal brake functions if your ABS is not working.
True or False? - ANSWER-True, without ABS, you still have
normal brake functions
What two things are important to prevent rollover? - ANSWER-
Keep cargo as close to the ground as possible and drive slowly
around turns.
When you turn suddenly while pulling doubles, which trailer is
most likely to turn over? - ANSWER-The rear trailer is twice as
likely to turn over.
Why should you not use the trailer hand brake to straighten out a
jackknifing trailer? - ANSWER-The brakes on the trailer wheels
cause the skid -- release so the trailer wheels will grip the road
again.
What is off tracking? - ANSWER-the rear wheels follow a different
path than the front wheels
, 4|Page
When you back a trailer, you should position your vehicle so you
can back in a curved path to the drivers side. True or False? -
ANSWER-When backing a trailer, you turn the steering wheel in
the opposite direction. Once the trailer starts to turn, you must
turn the wheel the other way to follow the trailer.
Whenever you back up with a trailer, try to position your vehicle
so you can back in a straight line.
True. If you must back on a curved path, back to the driver's
side so you can see.
What type of trailers can get stuck on railroad-highway crossings?
- ANSWER-Low slung units ( lowboy, car carrier, moving van,
possum-belly livestock trailer )
Single-axle tractor pulling a long trailer with its landing gear
set to accommodate a tandem-axle tractor.
