Texas CDL Permit Test STUDY GUIDE
2025/2026 ACCURATE QUESTIONS AND
VERIFIED CORRECT SOLUTIONS WITH
RATIONALES || 100% GUARANTEED PASS
<RECENT VERSION>
1. The color of clearance lamps on front of the vehicle must be - ANSWER ✓
amber
2. In backing a large truck you should - ANSWER ✓ have someone guide you
3. Every trailer must have how many reflectors on the rear - ANSWER ✓ 2
4. When turning right with a long vehicle or combination truck-trailer, if it is
impossible to stay in the proper lane, you should - ANSWER ✓ approach the
corner about 4 feet from the curb or right edge of the roadway, then if
necessary complete turn in center of street entered
5. Turn signal indicators are on all motor vehicles manufactured after the
model year - ANSWER ✓ 1959
6. No combination of vehicles other than a truck tractor-trailer combination
may exceed - ANSWER ✓ 65 ft
7. The youngest age for licensing a class a driver is - ANSWER ✓ 18
8. All school buses, taxis and other vehicles hauling passengers for hire or
lease must carry a chemical type extinguisher of at least - ANSWER ✓ one
quart capacity
9. The greatest height ordinarily allowed by state law for a vehicle including
it's load is - ANSWER ✓ 14 ft
,10.Vehicle transporting loose material (sand, dirt, gravel, etc.) that is capable of
spilling or blowing from the vehicle must - ANSWER ✓ meet loading and/
or covering regulations to prevent spilling or blowing
11.When one truck is following another truck or vehicle, it may keep far
enough back to allow how many vehicles to enter safely between them -
ANSWER ✓ one vehicle
12.The greatest weight allowed by state law for any vehicle including the load
is - ANSWER ✓ 80,000 lbs
13.Reflectors when required on a vehicle must be displayed only by -
ANSWER ✓ 100 ft to 500 ft
14.A slow moving vehicle emblem must be displayed only by - ANSWER ✓
vehicles designed to be operated at speed of 25 mph or less
15.Which of the following vehicles are NOT required to have mud flaps -
ANSWER ✓ pole trailers
16.the height from the ground for mounted reflectors must be at least -
ANSWER ✓ 24 inches
17.a single vehicle with a gross weight exceeding 26,000 lbs towing a trailer
which weighs in excess of 20,000 lbs requires a license - ANSWER ✓ class
B
18.registration papers are required to be in the possession of the driver or on the
vehicle when operating - ANSWER ✓ all trucks
19.Why should you not use the trailer hard brake to straighten out a jackknifing
trailer? - ANSWER ✓ This is the wrong thing to do since the brakes on the
trailer wheels caused the skid in the first place. Once the trailer wheels grip
the road again, the trailer will start to follow a different path than the front
wheels/ Longer vehicles will off track more
,20.True or False: If you must back on a curved path, back to the drivers side so
you can see. - ANSWER ✓ True
21.What type of trailers can get stuck on railroad highway crossing? -
ANSWER ✓ Lowboy
Car Carrier
22.Why should you not use the trailer hand valve while driving? - ANSWER ✓
The trailer hand valve should only be used to test the brakes.
23.Do not use it in driving because of the danger of making the trailer skid
24.Describe what trailer air supply control does. - ANSWER ✓ You push it in
to supply the trailer with air, and pull it out to shut the air off and put on the
trailer emergency brakes.
25.The value will pop out (closing the tractor protection valve) when air
pressure drops into the range of 20-45 psi
26.Describe what the service line is for - ANSWER ✓ The service line (called
the control line) carries air, which is controlled by the foot brake or the
trailer hand brake. Depending on how hard you press the foot brake or hand
valve, the pressure in the service line will similarly change
27.True or False: More than half of truck drivers deaths in crashes are the result
of truck rollover - ANSWER ✓ True
28.Fully loaded rigs are ___ times more likely to roll over in a crash than empty
rigs - ANSWER ✓ 10
29.What can you do to prevent rollovers? - ANSWER ✓ Keep the cargo close
to the ground
Drive slowly around turns
30.True or False: Keeping the cargo low is even more important in combination
vehicles than in straight trucks. - ANSWER ✓ True
, 31.Rollovers happen when you turn too _________ - ANSWER ✓ Fast
32.Trucks with trailers have a dangerous ... - ANSWER ✓ Crack the whip
effect
33.True or False: When pulling trailers, a sudden movement with your steering
wheel may cause your trailer to tip over. - ANSWER ✓ True
34.Large combinations vehicles take longer to stop when they are - ANSWER
✓ Empty
35.How much following distance should you have? - ANSWER ✓ At least 1
second for every 10 feet of vehicle length under 40 mpg
36.How much following distance should have driving 50 mpg?? - ANSWER ✓
At least 1 second for every 10 feet of your vehicle plus an additional secod
37.True or False: When lightly loaded, the very still suspensions springs and
strong brakes give poor traction. - ANSWER ✓ True
38.True or False: Test have shown that bobtails are easy to stop. - ANSWER ✓
False
39.In any combination rig, allow lots of ______ distance and look far ahead. -
ANSWER ✓ Following
40.What is the best way to recognize that the trailer has started to skid? -
ANSWER ✓ Seeing it in your mirrors
41.An emergency forces you to stop your tanker quickly or crash. You should: -
ANSWER ✓ Use control or stab braking.
42.Side to side surge can cause: - ANSWER ✓ Rollovers.
43.You should be extremely cautious when driving smooth bore tanks,
especially when you are: - ANSWER ✓ Starting and stopping.
2025/2026 ACCURATE QUESTIONS AND
VERIFIED CORRECT SOLUTIONS WITH
RATIONALES || 100% GUARANTEED PASS
<RECENT VERSION>
1. The color of clearance lamps on front of the vehicle must be - ANSWER ✓
amber
2. In backing a large truck you should - ANSWER ✓ have someone guide you
3. Every trailer must have how many reflectors on the rear - ANSWER ✓ 2
4. When turning right with a long vehicle or combination truck-trailer, if it is
impossible to stay in the proper lane, you should - ANSWER ✓ approach the
corner about 4 feet from the curb or right edge of the roadway, then if
necessary complete turn in center of street entered
5. Turn signal indicators are on all motor vehicles manufactured after the
model year - ANSWER ✓ 1959
6. No combination of vehicles other than a truck tractor-trailer combination
may exceed - ANSWER ✓ 65 ft
7. The youngest age for licensing a class a driver is - ANSWER ✓ 18
8. All school buses, taxis and other vehicles hauling passengers for hire or
lease must carry a chemical type extinguisher of at least - ANSWER ✓ one
quart capacity
9. The greatest height ordinarily allowed by state law for a vehicle including
it's load is - ANSWER ✓ 14 ft
,10.Vehicle transporting loose material (sand, dirt, gravel, etc.) that is capable of
spilling or blowing from the vehicle must - ANSWER ✓ meet loading and/
or covering regulations to prevent spilling or blowing
11.When one truck is following another truck or vehicle, it may keep far
enough back to allow how many vehicles to enter safely between them -
ANSWER ✓ one vehicle
12.The greatest weight allowed by state law for any vehicle including the load
is - ANSWER ✓ 80,000 lbs
13.Reflectors when required on a vehicle must be displayed only by -
ANSWER ✓ 100 ft to 500 ft
14.A slow moving vehicle emblem must be displayed only by - ANSWER ✓
vehicles designed to be operated at speed of 25 mph or less
15.Which of the following vehicles are NOT required to have mud flaps -
ANSWER ✓ pole trailers
16.the height from the ground for mounted reflectors must be at least -
ANSWER ✓ 24 inches
17.a single vehicle with a gross weight exceeding 26,000 lbs towing a trailer
which weighs in excess of 20,000 lbs requires a license - ANSWER ✓ class
B
18.registration papers are required to be in the possession of the driver or on the
vehicle when operating - ANSWER ✓ all trucks
19.Why should you not use the trailer hard brake to straighten out a jackknifing
trailer? - ANSWER ✓ This is the wrong thing to do since the brakes on the
trailer wheels caused the skid in the first place. Once the trailer wheels grip
the road again, the trailer will start to follow a different path than the front
wheels/ Longer vehicles will off track more
,20.True or False: If you must back on a curved path, back to the drivers side so
you can see. - ANSWER ✓ True
21.What type of trailers can get stuck on railroad highway crossing? -
ANSWER ✓ Lowboy
Car Carrier
22.Why should you not use the trailer hand valve while driving? - ANSWER ✓
The trailer hand valve should only be used to test the brakes.
23.Do not use it in driving because of the danger of making the trailer skid
24.Describe what trailer air supply control does. - ANSWER ✓ You push it in
to supply the trailer with air, and pull it out to shut the air off and put on the
trailer emergency brakes.
25.The value will pop out (closing the tractor protection valve) when air
pressure drops into the range of 20-45 psi
26.Describe what the service line is for - ANSWER ✓ The service line (called
the control line) carries air, which is controlled by the foot brake or the
trailer hand brake. Depending on how hard you press the foot brake or hand
valve, the pressure in the service line will similarly change
27.True or False: More than half of truck drivers deaths in crashes are the result
of truck rollover - ANSWER ✓ True
28.Fully loaded rigs are ___ times more likely to roll over in a crash than empty
rigs - ANSWER ✓ 10
29.What can you do to prevent rollovers? - ANSWER ✓ Keep the cargo close
to the ground
Drive slowly around turns
30.True or False: Keeping the cargo low is even more important in combination
vehicles than in straight trucks. - ANSWER ✓ True
, 31.Rollovers happen when you turn too _________ - ANSWER ✓ Fast
32.Trucks with trailers have a dangerous ... - ANSWER ✓ Crack the whip
effect
33.True or False: When pulling trailers, a sudden movement with your steering
wheel may cause your trailer to tip over. - ANSWER ✓ True
34.Large combinations vehicles take longer to stop when they are - ANSWER
✓ Empty
35.How much following distance should you have? - ANSWER ✓ At least 1
second for every 10 feet of vehicle length under 40 mpg
36.How much following distance should have driving 50 mpg?? - ANSWER ✓
At least 1 second for every 10 feet of your vehicle plus an additional secod
37.True or False: When lightly loaded, the very still suspensions springs and
strong brakes give poor traction. - ANSWER ✓ True
38.True or False: Test have shown that bobtails are easy to stop. - ANSWER ✓
False
39.In any combination rig, allow lots of ______ distance and look far ahead. -
ANSWER ✓ Following
40.What is the best way to recognize that the trailer has started to skid? -
ANSWER ✓ Seeing it in your mirrors
41.An emergency forces you to stop your tanker quickly or crash. You should: -
ANSWER ✓ Use control or stab braking.
42.Side to side surge can cause: - ANSWER ✓ Rollovers.
43.You should be extremely cautious when driving smooth bore tanks,
especially when you are: - ANSWER ✓ Starting and stopping.
