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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Vermont 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 Vermont CDL Manual. Take this practice test now to prepare for the actual VT CDL combination test!
1. Containerized loads:
are generally used for freight carried part way by rail or ship.
must be inspected before and after the trip.
should exceed gross weight and axle weight limits.
2. What is the proper following distance for a 40 foot truck traveling at 35 mph?
4 seconds
10 seconds
12 seconds
3. Which of the following is not a reason for covering cargo?
To protect people from spilled cargo
To prevent other drivers from looking at the cargo
To protect the cargo from weather
4. Passive railroad crossings:
do not have traffic control devices.
have at least one traffic control device.
should never be crossed using a CMV.
5. As part of your vehicle inspection, you are checking that air flows to all trailers. After using the trailer handbrake to provide air to the service line, you go to the rear of the rig. When you open the emergency line shut-off valve at the rear of the last trailer, you should hear:
a mechanical vibration.
air escaping from the open valve.
the service line valve close.
6. Who is responsible for inspecting the cargo?
The shipper
The driver
The person who loaded and secured the cargo
7. If you let air out of hot tires:
the tires will cool off much sooner.
as the tire cools, the air pressure will be too low.
air pressure will increases, causing the tires to blow out.
8. When you are driving on a slippery road, you should NOT:
adjust turning and braking to road conditions.
use the engine brake or speed retarder.
keep a longer following distance.
9. When approaching a stopped bus, you must be aware that:
passing a stopped bus is illegal.
a student may be driving the bus.
passengers may cross in front of or behind the bus.
10. When checking the air and electric lines to the trailer, be sure that the air lines are properly connected to the gland hands, and are:
properly greased.
secured with enough slack for turns.
secured with enough air leaks for turns.
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VT CDL Combination Test

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