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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Massachusetts 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 Massachusetts CDL Manual. Take this practice test now to prepare for the actual MA CDL combination test!
1. If you will be transporting hazardous materials that require placards, you must:
ask permission of the local transportation agency.
obtain a hazardous materials endorsement.
obtain a special transit permit.
transport the materials at night only.
2. When backing a trailer, if you turn the wheel left:
the cab and the trailer will go left.
the cab and the trailer will go right.
the cab will go left and the trailer will go right.
the cab will go right and the trailer will go left.
3. A truck tractor with _________ requires the shortest stopping distance.
Weight has no impact on stopping distance.
a lightly loaded trailer
an empty trailer
a fully loaded trailer
4. When approaching a stopped bus, you must be aware that:
passengers may cross in front of or behind the bus.
passing a stopped bus is illegal.
passengers crossing in front of the bus can always see you.
a student may be driving the bus.
5. You supply air to the trailer brake system by:
connecting the tractor service air line to the trailer service glad hand.
plugging the electrical cord into the trailer.
pulling out the trailer air supply valve.
pushing in the trailer air supply knob.
6. What can cause poor traction?
Overloading the truck.
Too much weight on the steering axle.
Too little weight on the driving axles.
All of the above.
7. Older trailers do not have spring brakes. If the air supply leaks away:
the trailer will stop normally.
there will be no emergency brakes.
the ABS won't work properly.
All of the above.
8. What is a pull up when referring to truck driving?
A specific maneuver used to decelerate smoothly in the exit lane.
A driving maneuver used to pull your vehicle over to the side of the road and stop.
When a driver stops and pulls forward to get a better position.
Using the speedometer to know when to shift up.
9. The heavier the vehicle:
the higher the center of gravity will be.
the less work the brakes must do to stop it.
the more work the brakes must do to stop it.
None of the above.
10. When going down grades, you should:
downshift to a lower gear.
shift up.
rely solely on engine braking to reduce your speed.
put the transmission in Neutral.
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MA CDL Combination Test

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