CDL Class A/B TEST STUDY GUIDE
2025/2026 ACCURATE QUESTIONS AND
VERIFIED CORRECT SOLUTIONS WITH
RATIONALES || 100% GUARANTEED PASS
<RECENT VERSION>
1. Why might your brakes start to fade going downhill? - ANSWER ✓ Because
they are overheating
2. Who is responsible for making sure all lights and mirrors are clean? -
ANSWER ✓ The vehicle driver
3. When is it safe to remove the radiator cap? - ANSWER ✓ When the cap is
cool enough to touch with a bare hand
4. When backing up, which side should you back towards? - ANSWER ✓ The
left-hand side
5. How many tiedowns should a cargo be held with? - ANSWER ✓ At least
one for every 10 feet of cargo
6. What's the most important reason for making sure that you signal well
before you make a turn? - ANSWER ✓ To dissuade other vehicles from
trying to pass you
7. If you smell exhaust fumes in the cab, what should you do? - ANSWER ✓
Stop immediately
8. When beginning a long downgrade, which of these is the only thing which
should NOT be a factor in choosing your speed? - ANSWER ✓ How far you
are ahead or behind your schedule
,9. Which of these substances can impair your ability to drive safely? -
ANSWER ✓ Some cold medicines
10.Where can you find the maximum weight loading for pressure for a tire? -
ANSWER ✓ Printed on the tire
11.Why do vehicles hauling hazardous materials need warning labels? -
ANSWER ✓ So emergency services know what they are dealing with in an
accident
12.Which of these conditions are the ones when you should downshift in
advance? - ANSWER ✓ Before entering a curve and entering a downgrade
13.How often should you check your gauges (air pressure, temperature ect.)? -
ANSWER ✓ As often as practicable
14.What should you do when caring for a conscious accident victim? -
ANSWER ✓ Keep them warm
15.What's the most important tool you have to monitor the condition of your
vehicle when underway? - ANSWER ✓ Your eyesight, your hearing and
sense of smell
16.What is the minimum tread depth for tires that are not front tires? -
ANSWER ✓ 2/32 of an inch
17.Approaching on and off ramps, you should remember... - ANSWER ✓ That
posted maximum speed may not be suitable for your vehicle
18.When pulling away in snow or icy conditions, what technique should you
employ? - ANSWER ✓ Very gradual, slow acceleration
19.If you experience a fire whilst your vehicle is moving, where is the only
place you should pull over? - ANSWER ✓ An open area
20.A driver should always - ANSWER ✓ HAVE AN EMERGENCY PLAN
,21.IF USING A HELPER WHILE BACKING A VEHICLE WHERE
SHOULD THEY STAND - ANSWER ✓ NEAR THE BACK OF THE
TRUCK
22.WHEN ABOUT TO DRIVE A VEHICLE WITH DUAL BRAKE SYSTEM
A DRIVER SHOULD - ANSWER ✓ WAIT FOR AIR PRESSURE TO
BUILD IN BOTH PRIMARY AND SECONDARY SYSTEMS
23.EXAMPLES OF SERIOUS TRAFFIC VIOLATION INCLUDE EACH OF
THE FOLLOWING OFFENSES, EXCEPT - ANSWER ✓ NOT
STOPPING BEHIND THE STOP LINE AT A STOP SIGN
24.HOW DOES DOUBLING YOUR SPEED FROM 20 MPH TO 40 MPH
AFFECT YOUR VEHICLES BRAKING DISTANCE - ANSWER ✓ IT
QUADRUPLES
25.WHEN TRAVELING DOWN A HILL - ANSWER ✓ YOUR SPEED
INCREASES
26.TAR IN ROAD PAVEMENT OFTEN RISES TO THE SURFACE OF THE
ROAD IN VERY HOT WEAHER.SPOTS WHERE THE TAR BLEEDS -
ANSWER ✓ ARE VERY SLIPPERY
27.THE SERVICE BRAKE SYSTEM - ANSWER ✓ APPLIES AND
REALESES THE BREAL WHEN YOU PRESS THE BREK PETAL
WHILE DRIVING NORMALLY
28.A CDL HOLDER WHO KNOWINGLY LEAVES THE SCENE OF AN
ACCIDENT WILL - ANSWER ✓ HAVE THEIR LICENSE
DISQUALIFIED FOR 12 MONTHS
29.What must all commercial motor vehicles, truck tractors, trailers, or semi-
trailers carry with them at ALL TIMES while operating on a public
highway? (14.1) - ANSWER ✓ Answer:
Registration papers
30.What do registration papers show? (14.1) - ANSWER ✓ Answer:
, Registration papers show the weight of the vehicle while empty and how
much it is registered to haul.
31.If hauling a load or moving equipment that is heavier, longer, wider, or
higher than the law allows, what must a driver do first? (14.1) - ANSWER ✓
Answer:
A special permit from the Texas Department of Transportation
32.If operating a truck, bus, truck tractor, or any vehicle towing a house trailer
on any highway outside the city limits (or on any divided highway) a half
hour before sunrise and a half hour after sunset, what must be carried in the
vehicle? (14.2) - ANSWER ✓ Answer:
At least three flares
or
*three red electric lanterns
or
*three portable red emergency reflectors
33.When should a driver make sure that the bus is carrying at least 3 flares or 3
red lanterns or three reflectors? (14.2) - ANSWER ✓ Answer:
When driving a truck, bus, truck tractor, or any vehicle towing a house
trailer on any highway outside the city limits (or on any divided highway) a
half hour before sunrise and a half hour after sunset
34.If it is not 1/2 an hour before sunrise or 1/2 an hour after sunset, what can be
used instead of flares, lanterns or reflectors? (14.2) - ANSWER ✓ Answer:
At least 2 red flags
35.1] When are flares, fusees and any signals produced by flame NOT allowed
to be carried on a vehicle? 2] What should be used instead?(14.2) -
ANSWER ✓ Answer:
1] If a motor vehicle is transporting explosives, flammable liquids,
compressed flammable gases, or if the vehicle requires compressed gas as
fuel, then the use of flares, fusees, or any other flame producing signals
should NOT be used. 2] Use D.O.T.- approved triangular reflectors.
36.What is the first thing a driver should do if his vehicle becomes disabled?
(14.2) - ANSWER ✓ Answer:
Put out the proper flares, flags or reflectors.
2025/2026 ACCURATE QUESTIONS AND
VERIFIED CORRECT SOLUTIONS WITH
RATIONALES || 100% GUARANTEED PASS
<RECENT VERSION>
1. Why might your brakes start to fade going downhill? - ANSWER ✓ Because
they are overheating
2. Who is responsible for making sure all lights and mirrors are clean? -
ANSWER ✓ The vehicle driver
3. When is it safe to remove the radiator cap? - ANSWER ✓ When the cap is
cool enough to touch with a bare hand
4. When backing up, which side should you back towards? - ANSWER ✓ The
left-hand side
5. How many tiedowns should a cargo be held with? - ANSWER ✓ At least
one for every 10 feet of cargo
6. What's the most important reason for making sure that you signal well
before you make a turn? - ANSWER ✓ To dissuade other vehicles from
trying to pass you
7. If you smell exhaust fumes in the cab, what should you do? - ANSWER ✓
Stop immediately
8. When beginning a long downgrade, which of these is the only thing which
should NOT be a factor in choosing your speed? - ANSWER ✓ How far you
are ahead or behind your schedule
,9. Which of these substances can impair your ability to drive safely? -
ANSWER ✓ Some cold medicines
10.Where can you find the maximum weight loading for pressure for a tire? -
ANSWER ✓ Printed on the tire
11.Why do vehicles hauling hazardous materials need warning labels? -
ANSWER ✓ So emergency services know what they are dealing with in an
accident
12.Which of these conditions are the ones when you should downshift in
advance? - ANSWER ✓ Before entering a curve and entering a downgrade
13.How often should you check your gauges (air pressure, temperature ect.)? -
ANSWER ✓ As often as practicable
14.What should you do when caring for a conscious accident victim? -
ANSWER ✓ Keep them warm
15.What's the most important tool you have to monitor the condition of your
vehicle when underway? - ANSWER ✓ Your eyesight, your hearing and
sense of smell
16.What is the minimum tread depth for tires that are not front tires? -
ANSWER ✓ 2/32 of an inch
17.Approaching on and off ramps, you should remember... - ANSWER ✓ That
posted maximum speed may not be suitable for your vehicle
18.When pulling away in snow or icy conditions, what technique should you
employ? - ANSWER ✓ Very gradual, slow acceleration
19.If you experience a fire whilst your vehicle is moving, where is the only
place you should pull over? - ANSWER ✓ An open area
20.A driver should always - ANSWER ✓ HAVE AN EMERGENCY PLAN
,21.IF USING A HELPER WHILE BACKING A VEHICLE WHERE
SHOULD THEY STAND - ANSWER ✓ NEAR THE BACK OF THE
TRUCK
22.WHEN ABOUT TO DRIVE A VEHICLE WITH DUAL BRAKE SYSTEM
A DRIVER SHOULD - ANSWER ✓ WAIT FOR AIR PRESSURE TO
BUILD IN BOTH PRIMARY AND SECONDARY SYSTEMS
23.EXAMPLES OF SERIOUS TRAFFIC VIOLATION INCLUDE EACH OF
THE FOLLOWING OFFENSES, EXCEPT - ANSWER ✓ NOT
STOPPING BEHIND THE STOP LINE AT A STOP SIGN
24.HOW DOES DOUBLING YOUR SPEED FROM 20 MPH TO 40 MPH
AFFECT YOUR VEHICLES BRAKING DISTANCE - ANSWER ✓ IT
QUADRUPLES
25.WHEN TRAVELING DOWN A HILL - ANSWER ✓ YOUR SPEED
INCREASES
26.TAR IN ROAD PAVEMENT OFTEN RISES TO THE SURFACE OF THE
ROAD IN VERY HOT WEAHER.SPOTS WHERE THE TAR BLEEDS -
ANSWER ✓ ARE VERY SLIPPERY
27.THE SERVICE BRAKE SYSTEM - ANSWER ✓ APPLIES AND
REALESES THE BREAL WHEN YOU PRESS THE BREK PETAL
WHILE DRIVING NORMALLY
28.A CDL HOLDER WHO KNOWINGLY LEAVES THE SCENE OF AN
ACCIDENT WILL - ANSWER ✓ HAVE THEIR LICENSE
DISQUALIFIED FOR 12 MONTHS
29.What must all commercial motor vehicles, truck tractors, trailers, or semi-
trailers carry with them at ALL TIMES while operating on a public
highway? (14.1) - ANSWER ✓ Answer:
Registration papers
30.What do registration papers show? (14.1) - ANSWER ✓ Answer:
, Registration papers show the weight of the vehicle while empty and how
much it is registered to haul.
31.If hauling a load or moving equipment that is heavier, longer, wider, or
higher than the law allows, what must a driver do first? (14.1) - ANSWER ✓
Answer:
A special permit from the Texas Department of Transportation
32.If operating a truck, bus, truck tractor, or any vehicle towing a house trailer
on any highway outside the city limits (or on any divided highway) a half
hour before sunrise and a half hour after sunset, what must be carried in the
vehicle? (14.2) - ANSWER ✓ Answer:
At least three flares
or
*three red electric lanterns
or
*three portable red emergency reflectors
33.When should a driver make sure that the bus is carrying at least 3 flares or 3
red lanterns or three reflectors? (14.2) - ANSWER ✓ Answer:
When driving a truck, bus, truck tractor, or any vehicle towing a house
trailer on any highway outside the city limits (or on any divided highway) a
half hour before sunrise and a half hour after sunset
34.If it is not 1/2 an hour before sunrise or 1/2 an hour after sunset, what can be
used instead of flares, lanterns or reflectors? (14.2) - ANSWER ✓ Answer:
At least 2 red flags
35.1] When are flares, fusees and any signals produced by flame NOT allowed
to be carried on a vehicle? 2] What should be used instead?(14.2) -
ANSWER ✓ Answer:
1] If a motor vehicle is transporting explosives, flammable liquids,
compressed flammable gases, or if the vehicle requires compressed gas as
fuel, then the use of flares, fusees, or any other flame producing signals
should NOT be used. 2] Use D.O.T.- approved triangular reflectors.
36.What is the first thing a driver should do if his vehicle becomes disabled?
(14.2) - ANSWER ✓ Answer:
Put out the proper flares, flags or reflectors.
