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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Delaware CDL combination test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the Delaware CDL Manual. Take this practice test now to prepare for the actual DE CDL combination test!
1. Who is responsible for inspecting the cargo?
The shipper
The person who loaded and secured the cargo
The driver
The motor carrier
2. You are coupling a tractor to a semi-trailer. You have backed up but are not yet under the trailer. Before backing under the semi-trailer, you should:
remove the wheel chocks.
connect the electrical cord and check the air lines.
supply air to the trailer system and lock the trailer brakes.
begin raising the landing gear.
3. If you're feeling tired while driving you should:
drink coffee.
eat something.
stop driving and get some rest.
increase your speed to get to your destination quicker.
4. An Anti-lock Braking System (ABS):
always shortens your stopping distance.
increases your normal braking capability.
lets you drive faster.
keeps your wheels from locking up when you brake hard.
5. When going down grades, you should:
put the transmission in Neutral.
shift up.
rely solely on engine braking to reduce your speed.
downshift to a lower gear.
6. Before entering an intersection, make sure that:
accelerate smoothly and change gears as necessary.
That there is enough room for the rear of your vehicle to clear the stop line on your side.
there's enough room to get at least halfway across.
there is sufficient space to clear it.
7. Over-length loads:
may require special equipment such as "wide load" or flags.
require special transit permits.
require special driving care.
All of the above.
8. Before leaving your vehicle unattended, you should:
Chock the wheels.
Apply the parking brake.
Remove the keys.
All of the above.
9. Which of the following is NOT a warning sign of fatigue?
Frequent blinking
Trouble remembering the last few miles driven
Driving at the speed of the traffic
Heavy eyelids
10. The crack-the-whip effect:
the ends of some vehicles to drag.
can cause a vehicle to tilt.
can turn the trailer over.
can cause problems for drivers coming toward you.
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DE CDL Combination Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
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