CDL General Knowledge Practice Test – (With Time Limit)

What can happen if you drive too fast around a curve?

Which of the following is true about backing in a commercial vehicle?

If you’re traveling at 55 mph on dry pavement, what is your reaction distance?

How many reflective triangles should you have in your commercial vehicle?

After you first stop and check your vehicle’s cargo, how many miles can you drive before you must stop and check the cargo again?

Which of the following is true about hydroplaning?

How many tie downs should you use for 20 feet of cargo?

When should you apply your brakes while driving around a curve?

When should you turn off your high beams?

Which of the following parts of the Skills Test must all drivers applying for a CDL take?

If you’re tested for alcohol while driving a commercial vehicle and your blood alcohol concentration (BAC) is 0.04 percent, what will happen?

How much tread depth should your front tires have in every groove?

Which of the following is true about the oil pressure gauge in a commercial vehicle?

What can happen to brakes if they get wet?

The total weight of a single vehicle and its load is called the

What might happen if there is too little weight on the front axle?

If your engine is on fire, you should

How can you recover from a skid caused by driving too fast?

When you load cargo on a flatbed, you should

Signs placed on the outside of a vehicle warning others of danger are called

What should you do if you’re being tailgated while driving a commercial vehicle?

When should you inspect your vehicle?

What should you be aware of if your vehicle has curved mirrors?

When driving downhill, when should you shift your transmission into a lower gear?

When crossing railroad tracks in a commercial vehicle, you should

Securing devices called false bulkheads are often used to haul

When transporting metal coils, the coils can be placed so that the “eyes” are

To find your total stopping distance, add perception distance, reaction distance, and

A long bed of loose material such as gravel you can use if your brakes fail is called an

Applying the brakes all the way and releasing them when they lock up is called