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

Maryland CDL Permit Test - Combination

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 Maryland 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 and true/false 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.
You have made error so far
Passing grade —
4 or fewer errors
advertising
1.
Emergency air lines are often coded with the color:
Green.
Orange.
Yellow.
Red.
2.
Before a drive, ensure that air flows to all trailers by:
Opening the rear shut-off valves and listening for escaping air.
Closing the rear shut-off valves and listening for escaping air.
Disconnecting air supply lines and listening for escaping air.
Rolling each trailer down a hill and testing the brakes.
3.
The service air line is attached to the:
Relay valves.
Supply line.
Emergency air line.
Steering wheel.
4.
The tractor protection valve:
Ensures that oil adequately lubricates the engine.
Protects the tractor from exceeding a set speed.
Keeps air in the truck braking system if the trailer develops a leak.
5.
When braking with ABS, you should:
Push the brake pedal harder than usual.
Push the brake pedal as you normally would.
Push the brake pedal more lightly than usual.
6.
When traveling more slowly than 40 mph, maintain at least ____ of following distance per every 10 feet of your vehicle.
One second
Two seconds
Three seconds
Four seconds
7.
If color-coded, which color is used to identify emergency, or supply, lines?
White
Yellow
Red
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