CDL General Knowledge Actual Exam
Latest Update 2026 Questions and
Correct Answers Rated A+
When you are in a 60 foot vehicle, how much space should you
maintain in front of you at highway speeds? -Answer-Seven seconds
What is the first thing to do if your vehicle catches fire while driving? -
Answer-Pull off the road and park in an open area
The best way to put out a fire is to: -Answer-Stand upwind and spray
the base of the fire
What are some causes of vehicle fires (3): -Answer-* Spilled fuel
* Short circuits
* Driver smoking
Safe drivers must maintain space around their vehicles for the
following reasons (3): -Answer-* In case you must stop suddenly
* In case there are cars following too closely
* In case there is an obstacle in the road.
Hydroplaning can occur when you drive through water or slush. If you
experience hydroplaning you should: -Answer-Release the accelerator
and push in the clutch
When making a right hand turn, you should always: -Answer-Keep the
rear of your vehicle close to the curb
,A front wheel skid is usually caused by (3): -Answer-* Driving too fast
for conditions
* Lack of tread on the front tires
* Cargo improperly loaded
Driving at night is more dangerous because of the following (3): -
Answer-* Most people are less alert at night due to fatigue
* Headlights often cause glare which can blind drivers
* There are more drunk drivers at night
How often should you check your cargo (3)? -Answer-* Within 25
miles after beginning a trip
* After you have driven for three hours
* After you take a break
An engine retarder is designed to: -Answer-Slow the vehicle down
without using brakes
When should tires be replaced (3)? -Answer-* When the tread
separates
* When there are broken valve stems
* If the tread depth on your front tires is less than 4/32 deep
In the event of a tire failure, you should: -Answer-Stay off the brake
and hold the steering wheel firmly
Your vehicle is going down a long hill and your brakes begin to fail.
What should you do? -Answer-Look for an escape ramp or an escape
route
The definition of a commercial motor vehicle is (3): -Answer-* A
vehicle with a gross weight over 26,001 lbs
,* A vehicle transporting hazardous materials
* A vehicle transporting 16 or more passengers
When driving at highway speeds, you should look 12-15 seconds
ahead which is: -Answer-At least a quarter of a mile
When driving in heavy traffic you should travel: -Answer-At a speed
consistent with the flow of traffic
In the event of an accident, you should remember to do the following
(4): -Answer-* Protect the area
* Notify authorities
* Stop any bleeding
* Keep the victims warm
True or False: When accelerating, you should speed up smoothly,
gradually and avoid jerking. -Answer-True
Why should the exhaust system be checked: -Answer-A leaking
exhaust system can allow poisonous fumes into the cab
True or False: The weight of the cargo changes a truck's height -
Answer-True
When is the road likely to be more slippery? -Answer-After it has been
raining lightly for 30 minutes
When making a left hand turn, you should always: -Answer-Wait until
you reach the center of the intersection before you turn
, Where should you place warning devices if you must stop on the
shoulder of the road (3)? -Answer-* Within ten feet of the front or rear
corners
* About 100 feet behind our vehicle
* In front of our vehicle
The following are all probably signs of a tire blowout (3): -Answer-* A
loud bang
* Vibration of the vehicle
* A thumping sound
True or False: Antifreeze is only used in colder temperatures. -
Answer-True
True or False: A few beers are the same as a few shots of whiskey or
glasses of wine -Answer-True
To correct a drive wheel acceleration skid, you should: -Answer-Stop
accelerating and push in the clutch
When going down a hill, you should always: -Answer-Make sure you
are in the right gear before starting down the hill.
What is the proper way to hold our hands on the steering wheel? -
Answer-With one hand on each opposite side of the wheel
If you are convicted of a traffic violation, you should notify your
employer within how many days, if the violation occurred in a personal
or commercial vehicle? -Answer-30 days
If you find that you are being tailgated, you should: -Answer-Increase
the distance between you and the tailgater.
Latest Update 2026 Questions and
Correct Answers Rated A+
When you are in a 60 foot vehicle, how much space should you
maintain in front of you at highway speeds? -Answer-Seven seconds
What is the first thing to do if your vehicle catches fire while driving? -
Answer-Pull off the road and park in an open area
The best way to put out a fire is to: -Answer-Stand upwind and spray
the base of the fire
What are some causes of vehicle fires (3): -Answer-* Spilled fuel
* Short circuits
* Driver smoking
Safe drivers must maintain space around their vehicles for the
following reasons (3): -Answer-* In case you must stop suddenly
* In case there are cars following too closely
* In case there is an obstacle in the road.
Hydroplaning can occur when you drive through water or slush. If you
experience hydroplaning you should: -Answer-Release the accelerator
and push in the clutch
When making a right hand turn, you should always: -Answer-Keep the
rear of your vehicle close to the curb
,A front wheel skid is usually caused by (3): -Answer-* Driving too fast
for conditions
* Lack of tread on the front tires
* Cargo improperly loaded
Driving at night is more dangerous because of the following (3): -
Answer-* Most people are less alert at night due to fatigue
* Headlights often cause glare which can blind drivers
* There are more drunk drivers at night
How often should you check your cargo (3)? -Answer-* Within 25
miles after beginning a trip
* After you have driven for three hours
* After you take a break
An engine retarder is designed to: -Answer-Slow the vehicle down
without using brakes
When should tires be replaced (3)? -Answer-* When the tread
separates
* When there are broken valve stems
* If the tread depth on your front tires is less than 4/32 deep
In the event of a tire failure, you should: -Answer-Stay off the brake
and hold the steering wheel firmly
Your vehicle is going down a long hill and your brakes begin to fail.
What should you do? -Answer-Look for an escape ramp or an escape
route
The definition of a commercial motor vehicle is (3): -Answer-* A
vehicle with a gross weight over 26,001 lbs
,* A vehicle transporting hazardous materials
* A vehicle transporting 16 or more passengers
When driving at highway speeds, you should look 12-15 seconds
ahead which is: -Answer-At least a quarter of a mile
When driving in heavy traffic you should travel: -Answer-At a speed
consistent with the flow of traffic
In the event of an accident, you should remember to do the following
(4): -Answer-* Protect the area
* Notify authorities
* Stop any bleeding
* Keep the victims warm
True or False: When accelerating, you should speed up smoothly,
gradually and avoid jerking. -Answer-True
Why should the exhaust system be checked: -Answer-A leaking
exhaust system can allow poisonous fumes into the cab
True or False: The weight of the cargo changes a truck's height -
Answer-True
When is the road likely to be more slippery? -Answer-After it has been
raining lightly for 30 minutes
When making a left hand turn, you should always: -Answer-Wait until
you reach the center of the intersection before you turn
, Where should you place warning devices if you must stop on the
shoulder of the road (3)? -Answer-* Within ten feet of the front or rear
corners
* About 100 feet behind our vehicle
* In front of our vehicle
The following are all probably signs of a tire blowout (3): -Answer-* A
loud bang
* Vibration of the vehicle
* A thumping sound
True or False: Antifreeze is only used in colder temperatures. -
Answer-True
True or False: A few beers are the same as a few shots of whiskey or
glasses of wine -Answer-True
To correct a drive wheel acceleration skid, you should: -Answer-Stop
accelerating and push in the clutch
When going down a hill, you should always: -Answer-Make sure you
are in the right gear before starting down the hill.
What is the proper way to hold our hands on the steering wheel? -
Answer-With one hand on each opposite side of the wheel
If you are convicted of a traffic violation, you should notify your
employer within how many days, if the violation occurred in a personal
or commercial vehicle? -Answer-30 days
If you find that you are being tailgated, you should: -Answer-Increase
the distance between you and the tailgater.
