CDL Practice Test - General Knowledge
Prepare yourself to get your CDL A license. Become a great truck driver and get your license with ease by practicing the CDL test before you actually take it.
- 1.Which of the following is true about how to mark a stopped vehicle?
- A.
Keep the vehicle taillights on.
- B.
If you are stopped longer than 10 minutes, put out reflective triangles at 10, 100 and 200 feet from the vehicle.
- C.
Place a triangle back beyond a hill that prevents oncoming traffic from seeing your vehicle within 250 feet.
- D.
Don't use the four-way flashers in daylight.
- 2.When traveling down a steep hill, how should you use your brakes?
- A.
Pump the brakes lightly.
- B.
Pump the brakes using lots of pressure.
- C.
Light, even and steady pressure.
- D.
Use strong pressure that increase as you move downward.
- 3.What can cause you to skid?
- A.
Over accelerating.
- B.
Turning too slowly.
- C.
Not using your brakes.
- D.
All of the above.
- 4.In a pre-trip inspection, what should you check for in your wheels and rims?
- A.
Look for rust around wheel nuts, which indicates looseness.
- B.
Cracked or damaged wheels or rims.
- C.
Mismatched or bent lock rims.
- D.
All of the above.
- 5.Retarders:
- A.
Provide emergency braking.
- B.
Apply extra braking power to the non-drive axles.
- C.
Help slow the vehicle and reduce brake wear.
- D.
Prevent skidding.
- 6.During a pre-trip inspection, check your brakes and suspensions system for:
- A.
Brake shoes and pads with fluid in them.
- B.
Shoes worn thinner than 1/4 inch.
- C.
Cracked, missing, or broken parts.
- D.
All of the above.
- 7.When traveling at highway speed, you should look ahead:
- A.
1/8 mile.
- B.
1/32 mile.
- C.
1/4 mile.
- D.
1/10 mile.
- 8.In a pre-trip inspection, what should your tires look like?
- A.
Tires are not mismatched in size and ply, and tires are not work or damaged.
- B.
Tread depth should be less than 4/32 inch on the front tires, and 2/32 inch on all other tires.
- C.
Dual tires should be touching.
- D.
All of the above.
- 9.What is important to know about loading cargo?
- A.
Make sure that the cargo is low and even.
- B.
Put lighter cargo toward the back.
- C.
The higher the center of gravity, the safer the cargo is.
- D.
All of the above.
- 10.On the freeway during rush hour where most cars are going 35 miles per hour, the safest speed for your vehicle is:
- A.
20 miles per hour.
- B.
25 miles per hour.
- C.
35 miles per hour.
- D.
45 miles per hour.
- 11.You can use water on what type of fires?
- A.
Electrical fires.
- B.
Gasoline fires.
- C.
Tire fires.
- D.
All of the above.
- 12.Federal and state laws prohibit driving an unsafe vehicle, so you should make sure that you fix which of the following problems?
- A.
A small leak of power steering fluid.
- B.
Steering wheel play of more than 10 degrees (2 inches on a 20 inch wheel).
- C.
A leak in the exhaust system.
- D.
All of the above.
- 13.What can cause a truck fire?
- A.
Tires with low pressure.
- B.
Electrical short circuit.
- C.
Flammable cargo.
- D.
All of the above.
- 14.Use the B:C fire extinguishers on:
- A.
Burning liquids and electrical fires.
- B.
Wood and paper fires.
- C.
Cloth fires.
- D.
All of the above.
- 15.At night you should always:
- A.
Watch the vehicles that are approaching.
- B.
Make sure that your stopping distance is within your sight distance.
- C.
Driver faster with low beams than high beams.
- D.
All of the above.
- 16.What is important to remember about using mirrors?
- A.
Even when using mirrors, there may be "blind spots".
- B.
You should check your mirrors twice before making a lane change.
- C.
Convex mirrors make things look closer.
- D.
Look in the mirror for several seconds each time.
- 17.Who is responsible for making sure that cargo is not overloaded?
- A.
The driver.
- B.
State and federal agents.
- C.
The shipper.
- D.
All of the above.
- 18.During hot weather, your tires:
- A.
Can be cooled by driving if they overheat.
- B.
Decrease in air pressure as the weather gets warmer.
- C.
Should be inspected every 100 miles or two hours.
- D.
All of the above.
- 19.If your hydraulic brakes go out, what should you do?
- A.
Try pumping the brakes to generate pressure.
- B.
Downshift.
- C.
Use the parking brake.
- D.
All of the above.
- 20.Sign(s) of tire failure is(are):
- A.
A loud bang.
- B.
Heavy steering.
- C.
Vibration.
- D.
All of the above.
- 21.While driving, you should look ahead:
- A.
1 to 3 seconds.
- B.
6 to 9 seconds.
- C.
12 to 15 seconds.
- D.
20 to 25 seconds.
- 22.Whenever you are tailgated you should:
- A.
Increase the space in front of you.
- B.
Go faster.
- C.
Slow down.
- D.
Flash your taillights.
- 23.Hydroplaning:
- A.
Occurs when water or slush forms a film between the tires and the road.
- B.
Can occur at any speed.
- C.
Is more likely to occur when tire pressure is low.
- D.
All of the above.
- 24.When using retarders, what is a major concern?
- A.
They cause extra brake wear.
- B.
They may cause the drive wheels to skid when the traction is poor.
- C.
Their use may be illegal on some highways.
- D.
They can cause the steering axle brakes to quit.
- 25.Speed and weight have what type of effect on stopping distance?
- A.
Empty trucks have a shorter stopping distance.
- B.
When you double your speed, it will take three times the distance to stop.
- C.
The heavier the vehicle, the more the brakes have to stop.
- D.
All of the above.
Questions: 20 | Attempts: 37772 | Last updated: Feb 7, 2019
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