NY CDL FINAL EXAM 2025 NEWEST
COMPLETE EXAM QUESTIONS AND
CORRECT ANSWERS||100%
GUARANTEED PASS||A+ GRADED!!!
1. What is off tracking? - ANSWER ✓ the rear wheels follow a different path
than the front wheels
2. 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 ✓ true
3. Why should you not use the trailer hand valve while driving? - ANSWER ✓
the danger of making the trailer skid
4. Describe what the trailer air supply control does. - ANSWER ✓ push it in to
supply the trailer with air, pull it out to shut the air off and put on the
emergency brakes
5. Describe what the service line is for - ANSWER ✓ carries air, which is
controlled by the foot brake or hand valve
6. What is the emergency air line for? - ANSWER ✓ supplies air to the trailer
air tanks, and controls the emergency brakes on a combination vehicle
7. Why should you use chocks when parking a trailer without spring brakes? -
ANSWER ✓ to keep it from rolling if the air leaks out and the emergency
brake lets go
8. Where are shut-off valves? - ANSWER ✓ service and supply air lines at the
back of trailers
9. What might happen if the trailer is too high when you try to couple? -
ANSWER ✓ it may not couple correctly
, 10.After coupling, how much space should be between the upper and lower
fifth wheel? - ANSWER ✓ none
11.You should look into the back of the fifth wheel to see if it is locked onto the
kingpin. True or False? - ANSWER ✓ true
12.To drive you need to raise the landing gear only until it just lifts off the
pavement. True or False? - ANSWER ✓ false
13.How do you know if your trailer is equipped with antilock brakes? -
ANSWER ✓ look under the vehicle for the ECU and wheel speed sensor
wires coming from the back of the brakes
14.How can you test that air flows to all trailers? - ANSWER ✓ open the
emergency line shut off valve, you should hear air escaping, then close it.
open the service line valve to make sure air goes through all trailers, if you
do not hear air going to all trailers check the shut off valves
15.How can you test the tractor protection valve? - ANSWER ✓ charge the air
brake system, and push the air supply knob in, shut the engine off and step
on the brake peddle a few times to reduce the air pressure in the tanks, the
tractor protection valve should pop out
16.How can you test the trailer emergency brakes? - ANSWER ✓ charge the
trailer air brake system and check that the trailer rolls freely. stop and pull
out the trailer air supply control valve , pull the trailer gently to see that the
trailer emergency brakes are on
17.How can you test the trailer service brakes/ - ANSWER ✓ check for normal
air pressure, release the parking brake, move forward slowly and use the
trolley valve to engage the trailer brakes
18.Gross Combination Weight - ANSWER ✓ The total weight of a powered
unit, plus trailer(s), plus the cargo
19.Most important reason for vehicle inspection - ANSWER ✓ safety
COMPLETE EXAM QUESTIONS AND
CORRECT ANSWERS||100%
GUARANTEED PASS||A+ GRADED!!!
1. What is off tracking? - ANSWER ✓ the rear wheels follow a different path
than the front wheels
2. 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 ✓ true
3. Why should you not use the trailer hand valve while driving? - ANSWER ✓
the danger of making the trailer skid
4. Describe what the trailer air supply control does. - ANSWER ✓ push it in to
supply the trailer with air, pull it out to shut the air off and put on the
emergency brakes
5. Describe what the service line is for - ANSWER ✓ carries air, which is
controlled by the foot brake or hand valve
6. What is the emergency air line for? - ANSWER ✓ supplies air to the trailer
air tanks, and controls the emergency brakes on a combination vehicle
7. Why should you use chocks when parking a trailer without spring brakes? -
ANSWER ✓ to keep it from rolling if the air leaks out and the emergency
brake lets go
8. Where are shut-off valves? - ANSWER ✓ service and supply air lines at the
back of trailers
9. What might happen if the trailer is too high when you try to couple? -
ANSWER ✓ it may not couple correctly
, 10.After coupling, how much space should be between the upper and lower
fifth wheel? - ANSWER ✓ none
11.You should look into the back of the fifth wheel to see if it is locked onto the
kingpin. True or False? - ANSWER ✓ true
12.To drive you need to raise the landing gear only until it just lifts off the
pavement. True or False? - ANSWER ✓ false
13.How do you know if your trailer is equipped with antilock brakes? -
ANSWER ✓ look under the vehicle for the ECU and wheel speed sensor
wires coming from the back of the brakes
14.How can you test that air flows to all trailers? - ANSWER ✓ open the
emergency line shut off valve, you should hear air escaping, then close it.
open the service line valve to make sure air goes through all trailers, if you
do not hear air going to all trailers check the shut off valves
15.How can you test the tractor protection valve? - ANSWER ✓ charge the air
brake system, and push the air supply knob in, shut the engine off and step
on the brake peddle a few times to reduce the air pressure in the tanks, the
tractor protection valve should pop out
16.How can you test the trailer emergency brakes? - ANSWER ✓ charge the
trailer air brake system and check that the trailer rolls freely. stop and pull
out the trailer air supply control valve , pull the trailer gently to see that the
trailer emergency brakes are on
17.How can you test the trailer service brakes/ - ANSWER ✓ check for normal
air pressure, release the parking brake, move forward slowly and use the
trolley valve to engage the trailer brakes
18.Gross Combination Weight - ANSWER ✓ The total weight of a powered
unit, plus trailer(s), plus the cargo
19.Most important reason for vehicle inspection - ANSWER ✓ safety
