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

Arizona 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 possible answer choices. Test questions come from the Arizona Commercial Driver License Manual. 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.
What is the Johnson bar?
A hand valve that works the trailer brakes
A valve that indicates the fuel level
A valve that limits the amount of cargo
2.
For safety purposes, when should you turn off a retarder?
When the roadways are slippery
When you have a passenger
When you are carrying a heavy load
3.
While driving a triple combination, keep the shut-off valves at the rear of the middle trailer in their:
Lowered position.
Closed position.
Open position.
4.
To control surge when stopping, you should not:
Keep a steady pressure on the brakes.
Brake well in advance of a stop.
Release the brakes too quickly.
5.
Wheels with welding repairs are:
Safe to be used if the repairs were done by a professional.
Safe to be used if the repair seems solid.
Not safe to be used.
6.
When inspecting your tires, you do not want to find:
Tire tread that is 4/32 of an inch deep.
Valve stems without damage.
Mismatched tire sizes.
7.
Of the following, which is not a recommended way to spot potential signs of trouble?
Watching the gauges
Using your senses
Checking critical items only at the beginning and end of a trip
Our Latest Videos
Ace Your DMV Written Test
Get your Cheat Sheet Now!

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