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DMV PRACTICE
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Commercial Driver’s License (CDL) Practice Exam
Practice mode
Question
1
of 25
QUESTION 1 / 25
What should a driver do if they encounter a flat tire during a trip?
Choose one answer below.
A
Continue driving until the destination
✓
B
Change it at the next stop
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C
Pull over and assess the situation
✓
D
Ignore it if not affecting the drive
✓
QUESTION 2 / 25
When is it most crucial to monitor air tank conditions in a vehicle?
Choose one answer below.
A
During city driving
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B
At the start of a longer trip
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C
During inclement weather
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D
All times to prevent brake failure
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QUESTION 3 / 25
What is an important aspect to remember when maintaining control while driving downhill?
Choose one answer below.
A
Always use cruise control
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B
Increase your speed to maintain momentum
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C
Maintain a safe braking distance
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D
Avoid using the brakes
✓
QUESTION 4 / 25
What are the different types of CMVs (Commercial Motor Vehicles)?
Choose one answer below.
A
Only buses and trailers
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B
Trucks, buses, and trailers designed for transport
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C
Motorcycles and passenger vehicles
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D
All vehicles used for public transport
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QUESTION 5 / 25
How can weather conditions affect driving?
Choose one answer below.
A
They do not affect driving at all
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B
They only affect visibility, not traction
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C
Adverse weather can reduce visibility, traction, and increase stopping distances
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D
Better weather improves vehicle performance immediately
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QUESTION 6 / 25
In a truck with dual parking control valves, what can you achieve using pressure from a separate tank?
Choose one answer below.
A
Release the main brakes
✓
B
Apply more brake pressure
✓
C
Start the engine
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D
Increase tire pressure
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QUESTION 7 / 25
What is the recommended action if you find the air pressure gauge in the red zone while driving?
Choose one answer below.
A
Increase engine speed
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B
Pull over and stop
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C
Continue driving cautiously
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D
Make immediate repairs
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QUESTION 8 / 25
On a clear night with low beam headlights, how far should you be able to stop if your headlights let you see 250 feet ahead?
Choose one answer below.
A
Within 200 feet
✓
B
Within 250 feet
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C
Within 300 feet
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D
Within 400 feet
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QUESTION 9 / 25
What is the most effective way to prevent accidents?
Choose one answer below.
A
Always driving at the speed limit
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B
Being aware and anticipating the actions of other road users
✓
C
Keep the windows rolled up
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D
Using high beams at all times
✓
QUESTION 10 / 25
At highway speeds, how far ahead should a driver be looking?
Choose one answer below.
A
1/8 mile
✓
B
1/4 mile
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C
1/2 mile
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D
1 mile
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QUESTION 11 / 25
How often should you check your cargo during a trip?
Choose one answer below.
A
Only at the start of the trip
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B
After every hour of driving
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C
Within the first 50 miles, every 150 miles or every 3 hours, and after breaks
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D
Only when you notice a shift in load
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QUESTION 12 / 25
By how much should you reduce your speed on wet roads?
Choose one answer below.
A
By one-fourth
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B
By one-third
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C
By half
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D
No adjustment is needed if you have good tires
✓
QUESTION 13 / 25
What is a necessary action to take when experiencing brake failure?
Choose one answer below.
A
Activate the horn continuously
✓
B
Shift into a lower gear, use the emergency brake, and look for a safe stopping place
✓
C
Stomp on the brake pedal repeatedly
✓
D
Try to steer away from the road
✓
QUESTION 14 / 25
What is the recommended action if you encounter a vehicle that has stopped in a low visibility area?
Choose one answer below.
A
Ignore it and continue driving
✓
B
Use reflective triangles to alert other motorists
✓
C
Honk your horn excessively
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D
Speed up and pass by safely
✓
QUESTION 15 / 25
How can a driver recognize that their brakes are fading?
Choose one answer below.
A
By hearing unusual sounds
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B
By feeling vibrations in the steering wheel
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C
By having to push harder on the brake pedal
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D
By noticing a burning smell
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QUESTION 16 / 25
What should a driver do if they feel drowsy while driving?
Choose one answer below.
A
Open the window for fresh air
✓
B
Drink coffee and continue driving
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C
Find a safe place to pull over and take a break or rest
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D
Keep driving until they reach their destination
✓
QUESTION 17 / 25
Which scenario indicates that your single brake system may need maintenance?
Choose one answer below.
A
Brakes emit a burning smell
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B
Brake pressure drops unexpectedly
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C
Compressor runs continuously at 90 psi
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D
Brake pedal sinks to the floor easily
✓
QUESTION 18 / 25
What should you avoid focusing on for too long while driving a commercial vehicle?
Choose one answer below.
A
The road ahead
✓
B
Vehicle speed
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C
Mirrors
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D
Dashboard indicators
✓
QUESTION 19 / 25
Which of the following actions is NOT recommended if you notice your brakes fading?
Choose one answer below.
A
Reducing speed gradually
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B
Increasing pressure on the brake pedal
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C
Shifting to a lower gear
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D
Pulling the parking brake
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QUESTION 20 / 25
How is controlled braking defined?
Choose one answer below.
A
Braking hard and quickly
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B
Squeezing brakes firmly without locking them up
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C
Pumping the brakes periodically
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D
Applying brakes only when necessary
✓
QUESTION 21 / 25
Controlled braking technique is critical to maintain what during driving?
Choose one answer below.
A
The vehicle's speed
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B
The security of the load
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C
The vehicle's stability
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D
All of the above
✓
QUESTION 22 / 25
To correct a drive-wheel braking skid, what should you do?
Choose one answer below.
A
Apply the brakes harder
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B
Release brake and steer/counter-steer
✓
C
Shift into neutral
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D
Accelerate to regain traction
✓
QUESTION 23 / 25
What is the recommended eye-lead time when driving?
Choose one answer below.
A
6-8 seconds
✓
B
12-15 seconds
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C
20-25 seconds
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D
4-5 seconds
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QUESTION 24 / 25
When going down a long downgrade in a truck, what gear should you be in compared to going up the grade?
Choose one answer below.
A
higher gear
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B
The same gear
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C
lower gear
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D
Neutral
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QUESTION 25 / 25
When driving down a long steep hill, when should you release the brake?
Choose one answer below.
A
When you reach halfway down the hill
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B
When you are 10 MPH below your safe speed
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C
When the brake temperature is high
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D
When you are 5 MPH below your safe speed
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