Following and Stopping Space - ONLINE CDL SCHOOL

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Following and Stopping Space

Build confidence with 10 original questions about Following and Stopping Space. 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

You are driving a combination vehicle at night. What should you do to avoid having to make a sudden lane change or stop?

Use your high beams at all times

Drive slowly enough to see obstacles with your headlights

Rely on GPS directions only

Follow other vehicles closely for guidance

2 / 10

After coupling a tractor and trailer, you notice a visible gap between the upper and lower fifth wheel. What should you do?

Do not drive the unit and get the coupling fixed

Lower the landing gear further

Drive slowly to see if the gap closes

Add more grease to the fifth wheel

3 / 10

You are driving a combination vehicle and need to stop in traffic. Why should you allow extra following distance and brake early?

Combination vehicles take longer to stop, especially when empty

It prevents the brakes from overheating

It is only required when driving in rain

It helps save fuel

4 / 10

When inspecting the air and electrical lines between your tractor and trailer, what is an important thing to check?

That the lines are painted red for visibility

That the lines are tightly stretched between tractor and trailer

That the lines are disconnected when parked

That the lines are free from damage and have enough slack for turns

5 / 10

You are preparing to uncouple your tractor-semitrailer. Why should you pull the tractor partially clear of the trailer but leave the frame under the trailer before fully pulling away?

To make it easier to see the kingpin

To allow the air lines to disconnect automatically

To reduce the weight on the tractor tires

To prevent the trailer from falling if the landing gear collapses

6 / 10

During a walkaround inspection of a combination vehicle, what should you check regarding the fifth wheel jaws?

They are painted for visibility

They are lubricated with oil

They are unlocked for easy release

They are closed around the shank of the kingpin

7 / 10

You are driving a combination vehicle and approaching a sharp curve on an off-ramp. What is the safest way to reduce the risk of a rollover?

Shift to a higher gear while turning

Make a quick lane change before the curve

Slow down to a safe speed before entering the curve

Accelerate through the curve to maintain traction

8 / 10

You are preparing to couple your tractor to a trailer. After backing under the trailer and locking the kingpin, what should you do to check the connection?

Immediately connect the air and electrical lines

Lower the trailer landing gear all the way

Raise the landing gear slightly and gently pull forward

Drive away slowly to test the connection

9 / 10

While driving a lightly loaded combination vehicle, you brake hard and notice the trailer starting to swing out. What should you do first?

Accelerate to straighten out

Release the brakes to regain traction

Steer sharply in the opposite direction

Apply the trailer hand brake

10 / 10

You are about to uncouple a loaded trailer. After lowering the landing gear to the ground, what should you do next?

Raise the landing gear completely

Pull the tractor away immediately

Turn the crank a few extra turns in low gear

Disconnect the air lines before lowering the gear

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The average score is 0%

About the Following and Stopping Space practice quiz

This practice quiz focuses on Following and Stopping Space, 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.

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