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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Indiana 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 Indiana CDL Manual. Take this practice test now to prepare for the actual IN CDL combination test!
1. Before starting down a hill, you should:
look for an escape route.
slow down and shift to a lower gear.
apply the brakes hard.
release the accelerator and shift to Neutral at the same time.
2. When you make a quick lane change, the crack-the-whip effect can turn the trailer over. The crack-the-whip effect is caused by:
the rear trailer of a triple.
strong wind.
worn tire tread.
rearward amplification.
3. Most truck driver deaths in crashes result from:
driving side-by-side with another truck.
truck rollovers.
following too closely.
4. The person watching the loading or unloading of a cargo tank must be within _______ of the tank.
5 feet
25 feet
15 feet
50 feet
5. The proper following distance for a 60-foot vehicle traveling at 50 mph is:
8 seconds
6 seconds
7 seconds
4 seconds
6. After starting the engine, the ABS light stays on. This means:
the ABS is in Neutral.
the ABS is working properly.
the ABS oil level is not adequate.
the ABS is not working properly.
7. The posted speed limit:
should never be exceeded.
may only be exceeded when driving in rural areas.
should only be exceeded when passing other vehicles.
is only a suggestion.
8. Air brakes:
are prohibited on larger vehicles.
are an effective way to stop large and heavy vehicles.
should be used only when driving on wet roads.
can improve fuel efficiency.
9. ABS will:
not give you more control over the vehicle during braking.
shorten your stopping distance.
increase your average speed.
not change your normal braking capability.
10. Which of the following is NOT part of a trailer air line system?
Service air-line
Emergency air-line
Glad hands
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IN CDL Combination Test

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