CALIFORNIA CLASS A LICENSE EVALUATION QUESTIONS
WITH ANSWERS 2025/2026 GRADED A+
the tractor protection valve will close and the trailer emergency brakes will come on
when there is a major leak in the__ brake line? - emergency
before you back under a truck trailer, make sure the? - trailer brakes are locked
loss of air pressure in the emergency line causes? - the trailers emergency brakes to
Come on
what will happen if the air lines are crossed when you hook up to an old trailer with no
spring brakes? - you could drive away with no trailer brakes
you are uncoupling a trailer. after you shut off the trailer air supply and lock the trailer
brakes, you should? - back up gently to ease pressure on the fifth wheel locking jaws.
after the trailer has been coupled to the tractor, the tractor protection control valve
should be placed in the __ position? - normal
the air leakage rate for a combination of two vehicles (engine off, brakes off) should not
be greater than__psi or less in one minute? - 3
which of these statements about crossing traffic with a large vehicle is true? - the best
way to cross traffic is to pull the vehicle part way across the road and block one lane
while waiting for the other lane to clear
which of these statements about tires and very hot weather driving is true? - inspect you
tires every two hours or 100 miles
which of the following is a proper braking technique once the vehicle is in the proper low
gear? - apply the brakes enough to slow down to approximately 5 mph below your safe
speed; release the brakes; repeat procedure when you reach your safe speed
you are driving a bus and it goes into a front wheel skid. the vehicle will? - slide
sideways and spin out
which of these statements about alcohol is true? - everyone who drinks is affected by
alcohol
this sign means"brake check area 1/2mile"? - area set aside for brake inspection in one
half mile
the brake system that applies and releases the brakes when he driver uses the brake
pedal is the ____ brake system? - service
,the air compressor governor controls? #2 - when the compressor will pump air into the
storage tanks.
if your vehicle has an alcohol evaporator, it is there to? - reduce the risk of ice in air
brake valves in cold weather
the safety valve protects the air brake system from___? - TOO MUCH AIR PRESSURE
vehicles without automatic tank drains should have their air tanks drained? - every day
the vehicle is driven.
if the air compressor develops a leak what keeps the air in the tanks? - the one way
check valve
during normal driving, parking and emergency brakes are usually held back by? - spring
brakes
the application pressure gauge shows how much air pressure you are? - apply to the
brake
the driver must be able to see a warning that is given when air pressure in the service
air tanks that falls below? - 60 psi
the supply pressure gauge? - shows how much pressure is in the air tanks
you should know that your brakes are fading when? - you have to push harder on the
brake pedal to control your speed on a down grade.
if your vehicle has dual parking control valves, you can use pressure from a separate
tank to? - release the spring emergency or parking brakes to move a short distance.
your vehicle has a dual air brake system. If a low air pressure warning comes on for the
second system, what should you do? - stop the vehicle while you are still able to control
the vehicle.
to check brake adjustment on the tractor, you need to release the tractor parking brake
and? - make a mark on the push rod, apply the tractor parking brake, and measure the
travel of the push rod from the brake chamber.
With the engine off and the brakes off, a straight truck airbrake system should not leaks
at a rate of more than ___ per minute - 2 psi
The driver must be able to see a warning that is given when air pressure in the service
air tanks falls below: - 60 psi
, braking as hard as possible, releasing the brake when the wheels lock, and putting on
the brakes again once the wheels start rolling defines which braking method? - stab
braking
for safe downhill braking the air brake system should apply? - equal brake pressure at
each wheel?
which of the following makes total stoping distance longer for air brake than hydraulics?
- time it takes for the air to flow through the lines.
you want to couple a semitrailer to a tractor. the trailer is at the right height when the? -
trailer is just below the middle of the fifth wheel.
before you back under a trailer? - make sure the trailer brakes are locked
the landing gear is up and the trailer is resting on the tractor. be sure there is enough
clearance between? - "tractor tires and rear of the trailer"
"tractor frame and kingpin"
neither answer is correct.
What is the best way to test the tractor-semitrailer connection? - set the trailer brakes
and pull forward gently
You need to _____ shut-off valves at the rear of _____ trailer(s) before you can supply
air to the tanks of a second trailer - Open; first trailer and close shut-off at rear of
second trailer
The converter dolly tow bar flew up when you unlocked the pintle hook. Why? - The
trailer brakes were unlocked
You are driving a 110 foot combination in packed snow conditions. The posted speed
limit is 45 mph. Your safe speed would be approximately: - 20 mph
Which of the following statements about stopping distance is true? - Combination
vehicles may take longer to stop when empty
The gross weight on any one axle of a combination vehicle which includes a semitrailer
must not exceed ____ lbs - 18,000
Which of these statements about the handling of combination vehicles is true? - A triple
bottom rig can stop quicker than a 5-axle semitrailer due to off tracking
Give an example of offtracking - Rear wheels follow a different path than the front
wheels
WITH ANSWERS 2025/2026 GRADED A+
the tractor protection valve will close and the trailer emergency brakes will come on
when there is a major leak in the__ brake line? - emergency
before you back under a truck trailer, make sure the? - trailer brakes are locked
loss of air pressure in the emergency line causes? - the trailers emergency brakes to
Come on
what will happen if the air lines are crossed when you hook up to an old trailer with no
spring brakes? - you could drive away with no trailer brakes
you are uncoupling a trailer. after you shut off the trailer air supply and lock the trailer
brakes, you should? - back up gently to ease pressure on the fifth wheel locking jaws.
after the trailer has been coupled to the tractor, the tractor protection control valve
should be placed in the __ position? - normal
the air leakage rate for a combination of two vehicles (engine off, brakes off) should not
be greater than__psi or less in one minute? - 3
which of these statements about crossing traffic with a large vehicle is true? - the best
way to cross traffic is to pull the vehicle part way across the road and block one lane
while waiting for the other lane to clear
which of these statements about tires and very hot weather driving is true? - inspect you
tires every two hours or 100 miles
which of the following is a proper braking technique once the vehicle is in the proper low
gear? - apply the brakes enough to slow down to approximately 5 mph below your safe
speed; release the brakes; repeat procedure when you reach your safe speed
you are driving a bus and it goes into a front wheel skid. the vehicle will? - slide
sideways and spin out
which of these statements about alcohol is true? - everyone who drinks is affected by
alcohol
this sign means"brake check area 1/2mile"? - area set aside for brake inspection in one
half mile
the brake system that applies and releases the brakes when he driver uses the brake
pedal is the ____ brake system? - service
,the air compressor governor controls? #2 - when the compressor will pump air into the
storage tanks.
if your vehicle has an alcohol evaporator, it is there to? - reduce the risk of ice in air
brake valves in cold weather
the safety valve protects the air brake system from___? - TOO MUCH AIR PRESSURE
vehicles without automatic tank drains should have their air tanks drained? - every day
the vehicle is driven.
if the air compressor develops a leak what keeps the air in the tanks? - the one way
check valve
during normal driving, parking and emergency brakes are usually held back by? - spring
brakes
the application pressure gauge shows how much air pressure you are? - apply to the
brake
the driver must be able to see a warning that is given when air pressure in the service
air tanks that falls below? - 60 psi
the supply pressure gauge? - shows how much pressure is in the air tanks
you should know that your brakes are fading when? - you have to push harder on the
brake pedal to control your speed on a down grade.
if your vehicle has dual parking control valves, you can use pressure from a separate
tank to? - release the spring emergency or parking brakes to move a short distance.
your vehicle has a dual air brake system. If a low air pressure warning comes on for the
second system, what should you do? - stop the vehicle while you are still able to control
the vehicle.
to check brake adjustment on the tractor, you need to release the tractor parking brake
and? - make a mark on the push rod, apply the tractor parking brake, and measure the
travel of the push rod from the brake chamber.
With the engine off and the brakes off, a straight truck airbrake system should not leaks
at a rate of more than ___ per minute - 2 psi
The driver must be able to see a warning that is given when air pressure in the service
air tanks falls below: - 60 psi
, braking as hard as possible, releasing the brake when the wheels lock, and putting on
the brakes again once the wheels start rolling defines which braking method? - stab
braking
for safe downhill braking the air brake system should apply? - equal brake pressure at
each wheel?
which of the following makes total stoping distance longer for air brake than hydraulics?
- time it takes for the air to flow through the lines.
you want to couple a semitrailer to a tractor. the trailer is at the right height when the? -
trailer is just below the middle of the fifth wheel.
before you back under a trailer? - make sure the trailer brakes are locked
the landing gear is up and the trailer is resting on the tractor. be sure there is enough
clearance between? - "tractor tires and rear of the trailer"
"tractor frame and kingpin"
neither answer is correct.
What is the best way to test the tractor-semitrailer connection? - set the trailer brakes
and pull forward gently
You need to _____ shut-off valves at the rear of _____ trailer(s) before you can supply
air to the tanks of a second trailer - Open; first trailer and close shut-off at rear of
second trailer
The converter dolly tow bar flew up when you unlocked the pintle hook. Why? - The
trailer brakes were unlocked
You are driving a 110 foot combination in packed snow conditions. The posted speed
limit is 45 mph. Your safe speed would be approximately: - 20 mph
Which of the following statements about stopping distance is true? - Combination
vehicles may take longer to stop when empty
The gross weight on any one axle of a combination vehicle which includes a semitrailer
must not exceed ____ lbs - 18,000
Which of these statements about the handling of combination vehicles is true? - A triple
bottom rig can stop quicker than a 5-axle semitrailer due to off tracking
Give an example of offtracking - Rear wheels follow a different path than the front
wheels
