Ace Your DMV Written Test with our Guaranteed Cheat Sheet.
Cheat Sheet

Tennessee CDL Permit Test - Double

Number of questions: 20
Passing score: 16
Directions: This endorsement is required if the driver will pull two or three trailers. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. To pass, the applicant must answer at least 16 questions correctly. Each question has three or four possible answer choices. Test questions come from the Commercial Driver Guide. Questions come from chapters covering: Driving Safely, Air Brakes (if applicable), Combination Vehicles and Doubles and Triples. The Double/Triple endorsement can be used with the Class A CDL.
You have made error so far
Passing grade —
4 or fewer errors
advertising
1.
Stopping distance can be affected by:
Speed.
Sunshine.
Time of day.
Traffic.
2.
What is another name for the service line?
The control line
The utility line
The open line
The parallel line
3.
Which part of the truck is the air compressor connected to?
The transmission
The engine
The radiator
The door latch
4.
Where is the safety relief valve usually located?
Near the rear brake
Near the front brake
In an air tank
On the dashboard
5.
If a driver begins to feel fatigued while driving, they should:
Continue driving.
Drink coffee.
Stop and rest.
Drive faster to finish the trip more quickly.
6.
Regrooved tires are:
Allowed only on the front of a bus.
Allowed only on the rear of a bus.
Not allowed anywhere on a bus.
7.
The air storage tanks:
Hold only enough air for one braking cycle.
Hold enough air for brakes to be used several times if the compressor stops working.
Do not hold air unless there is an emergency.
Hold enough air for more than 1,000 braking cycles.
Our Latest Videos

Wait, before you go

Ace your DMV Written Test with our Guaranteed Cheat Sheet.

  • Cheat Sheets Save Time
  • Cheat Sheets pass on your first try