CDL KNOWLEDGE TEST PRACTICE WITH ALL CORRECT &
100% VERIFIED ANSWERS |LATEST VERSION |ALREADY
GRADED A+
Most serious vehicle skids result from: ✔Correct Answer-Driving too fast for road conditions
Your driving a new truck with a manual transmission. What gear will you probably have to use to take
a long, steep downhill grade? ✔Correct Answer-A lower gear than you would use to climb the hill
There are 2 things drivers can do to prevent a rollover: 1. Go slow around turns, 2.: ✔Correct
Answer-Keep the cargo as close to the ground as possible
Which of these can cause a fire?
1. Under inflation of tires
2. Loose fuel connections
3. all of the above ✔Correct Answer-All of the above
If you're driving a slow-moving vehicle on a 2-lane highway, you must pull off at the first safe turnout
if the number of vehicles behind you is: ✔Correct Answer-5 of more
Rust around a lug nut indicates: ✔Correct Answer-A loose lug nut
When checking the adjustment on air brakes, slack adjusters should have no more than : ✔Correct
Answer-1 inch of travel
You're coupling a semi-trailer to your tractor but haven't yet backed under. The trailer is at the right
height when: ✔Correct Answer-It will be raised slightly when the tractor is backed under it.
The braking power of the spring brakes depends on: ✔Correct Answer-The service brakes being in
adjustment
Your brakes are fading when: ✔Correct Answer-You have to push harder and harder to get the
same stopping power on downgrade.
You're driving on a slippery road during the day. What does the CDL Guide say about how much
space you should keep ahead of your truck? ✔Correct Answer-Allow "more space" than is needed
for ideal driving conditions
If your bus has an emergency exit door, it must: ✔Correct Answer-Be closed when operating the
bus
The most common bus collisions often happen at: ✔Correct Answer-Intersections
You should know the outage needed for the liquids you carry because: ✔Correct Answer-Some
liquids expand more than others when they get warm
The amount of liquid to load into a tank depends on: ✔Correct Answer-1. The weight of the liquids
2. The legal weight limits
, Empty trucks: ✔Correct Answer-Require greater stopping distance than full ones
When the wheels of a trailer lock up, the trailer will tend to swing around. This is more likely to
happen when the trailer is: ✔Correct Answer-Empty or lightly loaded
The trailer hand valve ( also called the trolley valve or Johnson bar) works the trailer brakes. Don't
use it in driving because of the danger of making the trailer skid. The trailer hand valve should only
be used when: ✔Correct Answer-Testing the trailer brakes after hooking up to a trailer
What action should you take if your bus stills on railroad tracks? ✔Correct Answer-Evacuate all
passengers immediately
If you're in an accident that causes injury to anyone, or if the damage amounted to $700 or more,
you must file a state accident report within: ✔Correct Answer-4 working days from the date of the
accident
To transport cargo safely, which of these are you NOT responsible for?
1. Inspecting the cargo
2. Ensuring the freshness of sealed cargo
3. Recognizing possible overloads
4. Making sure that cargo is properly secured ✔Correct Answer-Ensuring the freshness of sealed
cargo
Which of the following causes vehicle fires?
1. Short circuits and loose connections
2. Flammable cargo with proper ventilation
3. Spilled fuel cleaned up quickly and properly
4. Driver smoking in a rest area ✔Correct Answer-Short circuits and loose connections
How can you determine if your cehicle is equipped with ABS ?
1. Check if your vehicle was manufactured after March 1, 1998 ( they are required to have the panel
light)
2. Look for wheel speed sensor wires that are coming from the rear of your brakes
3. check for yellow ABS malfunction lamps on the instrument panel.
4. All of the above ✔Correct Answer-All of the above
According to the manual, how far ahead should drivers look while driving? ✔Correct Answer-12 to
15 seconds ahead
Is it true that as long as the engine is not overheated, it is completely safe to remove the radiator
cap? ✔Correct Answer-NO
An anti-lock braking system will
1. let you drive faster
2. increase a vehicle's ultimate stopping power
3. shorten your stopping distance
4. keep your brakes from locking when you brake hard ✔Correct Answer-keep your brakes from
locking when you brake hard
100% VERIFIED ANSWERS |LATEST VERSION |ALREADY
GRADED A+
Most serious vehicle skids result from: ✔Correct Answer-Driving too fast for road conditions
Your driving a new truck with a manual transmission. What gear will you probably have to use to take
a long, steep downhill grade? ✔Correct Answer-A lower gear than you would use to climb the hill
There are 2 things drivers can do to prevent a rollover: 1. Go slow around turns, 2.: ✔Correct
Answer-Keep the cargo as close to the ground as possible
Which of these can cause a fire?
1. Under inflation of tires
2. Loose fuel connections
3. all of the above ✔Correct Answer-All of the above
If you're driving a slow-moving vehicle on a 2-lane highway, you must pull off at the first safe turnout
if the number of vehicles behind you is: ✔Correct Answer-5 of more
Rust around a lug nut indicates: ✔Correct Answer-A loose lug nut
When checking the adjustment on air brakes, slack adjusters should have no more than : ✔Correct
Answer-1 inch of travel
You're coupling a semi-trailer to your tractor but haven't yet backed under. The trailer is at the right
height when: ✔Correct Answer-It will be raised slightly when the tractor is backed under it.
The braking power of the spring brakes depends on: ✔Correct Answer-The service brakes being in
adjustment
Your brakes are fading when: ✔Correct Answer-You have to push harder and harder to get the
same stopping power on downgrade.
You're driving on a slippery road during the day. What does the CDL Guide say about how much
space you should keep ahead of your truck? ✔Correct Answer-Allow "more space" than is needed
for ideal driving conditions
If your bus has an emergency exit door, it must: ✔Correct Answer-Be closed when operating the
bus
The most common bus collisions often happen at: ✔Correct Answer-Intersections
You should know the outage needed for the liquids you carry because: ✔Correct Answer-Some
liquids expand more than others when they get warm
The amount of liquid to load into a tank depends on: ✔Correct Answer-1. The weight of the liquids
2. The legal weight limits
, Empty trucks: ✔Correct Answer-Require greater stopping distance than full ones
When the wheels of a trailer lock up, the trailer will tend to swing around. This is more likely to
happen when the trailer is: ✔Correct Answer-Empty or lightly loaded
The trailer hand valve ( also called the trolley valve or Johnson bar) works the trailer brakes. Don't
use it in driving because of the danger of making the trailer skid. The trailer hand valve should only
be used when: ✔Correct Answer-Testing the trailer brakes after hooking up to a trailer
What action should you take if your bus stills on railroad tracks? ✔Correct Answer-Evacuate all
passengers immediately
If you're in an accident that causes injury to anyone, or if the damage amounted to $700 or more,
you must file a state accident report within: ✔Correct Answer-4 working days from the date of the
accident
To transport cargo safely, which of these are you NOT responsible for?
1. Inspecting the cargo
2. Ensuring the freshness of sealed cargo
3. Recognizing possible overloads
4. Making sure that cargo is properly secured ✔Correct Answer-Ensuring the freshness of sealed
cargo
Which of the following causes vehicle fires?
1. Short circuits and loose connections
2. Flammable cargo with proper ventilation
3. Spilled fuel cleaned up quickly and properly
4. Driver smoking in a rest area ✔Correct Answer-Short circuits and loose connections
How can you determine if your cehicle is equipped with ABS ?
1. Check if your vehicle was manufactured after March 1, 1998 ( they are required to have the panel
light)
2. Look for wheel speed sensor wires that are coming from the rear of your brakes
3. check for yellow ABS malfunction lamps on the instrument panel.
4. All of the above ✔Correct Answer-All of the above
According to the manual, how far ahead should drivers look while driving? ✔Correct Answer-12 to
15 seconds ahead
Is it true that as long as the engine is not overheated, it is completely safe to remove the radiator
cap? ✔Correct Answer-NO
An anti-lock braking system will
1. let you drive faster
2. increase a vehicle's ultimate stopping power
3. shorten your stopping distance
4. keep your brakes from locking when you brake hard ✔Correct Answer-keep your brakes from
locking when you brake hard
