|
A five-axle tractor semi-trailer
|
|
|
A three-axle tractor semi-trailer
|
|
|
A bobtail tractor
|
|
|
A triple trailer
|
Indiana CDL Permit Test - Combination
(From the 2021 Indiana CDL driver handbook)
| Number of questions: | 20 |
| Passing score: | 16 |
Directions:
All applicants who are applying for a Class A CDL should be prepared to take the Combination test. This test covers information found in Section 6 of the Commercial Driver License Manual. Section 6 provides the information needed to safely operate tractor-trailers, doubles, triples, and straight trucks with trailers. The test is made up of 20 multiple-choice questions, and applicants will need to correctly answer a minimum of 16 questions to pass. The Combination test is not a replacement for the Double/Triple endorsement test.
Passing grade —
4 or fewer errors
advertising
1.
Which type of vehicle is most prone to the “crack-the-whip” effect?
2.
The trailer hand valve should be used:
|
Regularly to activate the trailer brakes in all driving conditions.
|
|
|
Only to test the trailer brakes.
|
|
|
Only in inclement weather when the trailer may skid.
|
|
|
Only if the trailer is carrying a load.
|
3.
Rollovers happen when drivers:
|
Turn too quickly.
|
|
|
Do not driving fast enough.
|
|
|
Pay attention to the road.
|
|
|
Drive illegally.
|
4.
When driving a bobtail tractor, you should be aware that:
|
Bobtails stop very easily.
|
|
|
Bobtails cannot drive as fast as tractors with semitrailers.
|
|
|
Bobtails are more difficult to stop than tractors with semitrailers.
|
|
|
Bobtails are illegal in most states.
|
5.
After finishing a pre-trip inspection, you should:
|
Leave the rear shut-off valves open.
|
|
|
Remove the service line valve.
|
|
|
Close the emergency line valve.
|
|
|
Leave the emergency line valve open.
|
6.
Emergency air lines are often coded with the color:
|
Green.
|
|
|
Orange.
|
|
|
Yellow.
|
|
|
Red.
|
7.
In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when:
|
Air pressure drops to a level between 20 and 45 psi.
|
|
|
You are experiencing a trailer jackknife.
|
|
|
Wheels have regained traction after a skid.
|
|
|
Air pressure is above 45 psi.
|
Ace Your DMV Written Test
Get your Cheat Sheet Now!
Get your Cheat Sheet Now!
Wait, before you go
Ace your DMV Written Test with our Guaranteed Cheat Sheet.
