1|Page
CDL GENERAL
KNOWLEDGE|COMPREHENSIVE
Q&A FOR CERTIFICATION SUCCESS
2026
Where or when should you test the stopping action of your service brakes? -
correct-answer -When the vehicle is moving about 5 mph.
Which of these is not part of the pre-trip inspection of the engine compartment? -
correct-answer -Valve clearance
Cargo covers: - correct-answer -(both are correct) Protect people from spilled
cargo; May be a safety requirement in some states.
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High beams should be: - correct-answer -Used when it is safe to do so.
Which of these is the most important thing to remember about emergency
braking? - correct-answer -If the wheels are skidding, you cannot control the
vehicle.
You must park on the side of a level, straight, two-lane road. Where should you
place the reflective triangles? - correct-answer -One within 10 feet of the rear of
the vehicle, one about 100 feet to the rear, and one about 100 feet to the front of
the vehicle.
The road you are driving on becomes very slippery due to glare ice. Which of
these is a good thing to do in such a situation? - correct-answer -Stop driving as
soon as you can safely do so.
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Which of these statements about tires and hot-weather driving is true? - correct-
answer -You should inspect your tires every two hours or very 100 miles when
driving in very hot weather.
Your truck is in a traffic emergency and may collide with another vehicle if you do
not take action. Which of these is a good rule to remember at such a time? -
correct-answer -You can almost always turn to miss an obstacle more quickly than
you can stop.
What should you do when your vehicle hydroplanes? - correct-answer -Release
the accelerator.
You are starting your vehicle from astop. As you apply power to the driver wheels,
they start to spin. You should: - correct-answer -Take your foot off the
accelerator.
, 4|Page
Stab braking: - correct-answer -Involves releasing the brakes only after the wheels
lock up.
It takes the body about _____ hours to get rid of the alcohol in four drinks. -
correct-answer -4
Cargo that can shift should have at least _____ tie-downs. - correct-answer -2
If a straight vehicle (no trailer or articulation) goes into a front-wheel skid, it will: -
correct-answer -Go straight ahead even if the steering wheel is turned.
Which of these statements about accelerating is true? - correct-answer -Rough
acceleration can cause mechanical damage.
CDL GENERAL
KNOWLEDGE|COMPREHENSIVE
Q&A FOR CERTIFICATION SUCCESS
2026
Where or when should you test the stopping action of your service brakes? -
correct-answer -When the vehicle is moving about 5 mph.
Which of these is not part of the pre-trip inspection of the engine compartment? -
correct-answer -Valve clearance
Cargo covers: - correct-answer -(both are correct) Protect people from spilled
cargo; May be a safety requirement in some states.
,2|Page
High beams should be: - correct-answer -Used when it is safe to do so.
Which of these is the most important thing to remember about emergency
braking? - correct-answer -If the wheels are skidding, you cannot control the
vehicle.
You must park on the side of a level, straight, two-lane road. Where should you
place the reflective triangles? - correct-answer -One within 10 feet of the rear of
the vehicle, one about 100 feet to the rear, and one about 100 feet to the front of
the vehicle.
The road you are driving on becomes very slippery due to glare ice. Which of
these is a good thing to do in such a situation? - correct-answer -Stop driving as
soon as you can safely do so.
,3|Page
Which of these statements about tires and hot-weather driving is true? - correct-
answer -You should inspect your tires every two hours or very 100 miles when
driving in very hot weather.
Your truck is in a traffic emergency and may collide with another vehicle if you do
not take action. Which of these is a good rule to remember at such a time? -
correct-answer -You can almost always turn to miss an obstacle more quickly than
you can stop.
What should you do when your vehicle hydroplanes? - correct-answer -Release
the accelerator.
You are starting your vehicle from astop. As you apply power to the driver wheels,
they start to spin. You should: - correct-answer -Take your foot off the
accelerator.
, 4|Page
Stab braking: - correct-answer -Involves releasing the brakes only after the wheels
lock up.
It takes the body about _____ hours to get rid of the alcohol in four drinks. -
correct-answer -4
Cargo that can shift should have at least _____ tie-downs. - correct-answer -2
If a straight vehicle (no trailer or articulation) goes into a front-wheel skid, it will: -
correct-answer -Go straight ahead even if the steering wheel is turned.
Which of these statements about accelerating is true? - correct-answer -Rough
acceleration can cause mechanical damage.
