Coupling: Initial Setup - ONLINE CDL SCHOOL

Practice free. No account needed.
Want your scores, test history, and progress in your driver dashboard? Create a free account or log in before starting to save your results.

Coupling: Initial Setup

Build confidence with 10 original questions about Coupling: Initial Setup. Review your answers and explanations after finishing.

Supplemental study practice. This is not a government licensing exam or ELDT certification, and does not replace hands-on training. Follow your state’s current handbook.

1 / 10

After connecting the air lines, how do you check for crossed air lines before moving the vehicle?

Apply and release the trailer brakes and listen for their operation

Look for air leaks at the glad hands

Pull the trailer forward a few feet

Check if the trailer lights are working

2 / 10

You are preparing to couple a tractor to a semitrailer. After backing up so the fifth wheel just touches the trailer, what should you do next?

Start backing under the trailer at full speed

Set the parking brake and place the transmission in neutral

Raise the trailer landing gear

Immediately connect the electrical cord

3 / 10

While preparing to couple a tractor and trailer, you notice the trailer is too high for the fifth wheel. What should you do?

Lower the trailer so the tractor will raise it slightly when backing under

Continue backing up and force the tractor under the trailer

Disconnect the air lines

Raise the trailer even higher

4 / 10

When coupling a drawbar, what should you do after lowering the drawbeam so the drawbar eye covers the coupling ball?

Raise the trailer landing gear

Lubricate the drawbar eye

Connect the electrical cord

Rotate the safety cover bar back inwards and secure it with the safety lock screw and nut

5 / 10

During coupling, why is it important to make sure the fifth wheel plate is properly greased?

To avoid electrical shorts

To keep the trailer brakes from overheating

To prevent steering problems caused by friction

To ensure the landing gear raises smoothly

6 / 10

After raising the trailer landing gear, what should you check before driving away?

Disconnect the air lines

Lower the trailer supports again

Release the trailer brakes

Ensure there is enough clearance between the tractor frame and landing gear

7 / 10

After coupling, how do you check that the fifth wheel jaws have properly locked around the kingpin?

Go under the trailer and look into the back of the fifth wheel

Pull forward quickly

Listen for a clicking sound

Check if the trailer lights are on

8 / 10

When coupling a gooseneck hitch, what is a required step after positioning the trailer’s coupler over the ball?

Raise the trailer landing gear

Test the trailer brakes

Connect the air lines

Latch the clamp to secure the trailer to the ball

9 / 10

You have just locked the trailer brakes during coupling. What is the next step before fully backing under the trailer?

Back the tractor slowly under the trailer using the lowest reverse gear

Release the parking brake

Connect the electrical cord

Remove the wheel chocks

10 / 10

You are about to connect the air lines during coupling. What should you check before making the connection?

Glad hand seals are clean and undamaged

Electrical cord is already connected

Fifth wheel jaws are locked

Trailer landing gear is fully raised

Your score is

The average score is 0%

About the Coupling: Initial Setup practice quiz

This practice quiz focuses on Coupling: Initial Setup, listed under CDL Practice — Combination Vehicles. Use it to check what you understand, spot topics to revisit, and connect the material to safe, informed decisions on the road.

Before you begin

Keep your current CDL manual or course notes nearby. Read each prompt carefully and think through why an answer fits, especially when a question describes a vehicle, road, or workplace situation. Licensing rules and procedures can vary, so confirm requirements with current official materials for your state.

After you finish

Review any explanations shown with your results. Note unfamiliar terms or missed concepts, then revisit your manual or course notes before trying again. Use your score to guide study; understanding why an answer is correct matters more than the number alone.

Study note: These quizzes are independent study practice. They are not state licensing exams, official government materials, or ELDT certification, and they do not replace required training.

Explore CDL Tests to find more practice by subject.