In newer vehicles with air brakes, the parking brake is controlled by a yellow, diamond-shaped knob. The driver should pull the knob outward to apply the parking brakes and push the knob inward to release them.

Pulling a yellow, diamond-shaped knob.

Pushing a yellow, diamond-shaped knob.

Pulling a yellow, diamond-shaped knob.

When backing a vehicle with a trailer, you must turn the steering wheel in the direction opposite of where you want to go. Once your trailer starts to turn, you should turn the steering wheel the other way to follow the trailer.

In the direction opposite of where you want the trailer to move.

In the direction you want the trailer to move.

In the direction opposite of where you want the trailer to move.

To the left until backing is complete.

In an air brake system, a low air pressure warning signal must come on if air pressure in the tanks falls below 60 psi. This warning signal may come in the form of a light, a buzzer, or a wig wag.

When tank pressure falls below 60 psi.

When tank pressure falls below 120 psi.

When tank pressure falls below 60 psi.

When tank pressure falls below 10 psi.

If an emergency vehicle using its flashing lights is stopped on the side of a multilane road, move over laws require drivers to vacate the lane directly next to the vehicle, if possible. If a driver cannot move over safely, they must slow down and proceed with caution.

Drivers to move into lanes that are not next to stopped law enforcement vehicles.

People to sit on the edge of their seats while in moving vehicles.

Vehicles to stop before approaching a law enforcement vehicle pulled over on the side of a road

Maryland Driver's Examination

Double #1

FREE Double Triple Test Online | Maryland 2024

Train for FREE with our Maryland CDL double triple practice test online. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a MD CDL double triple license in 2021, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that DMV requirements may vary from state to state.

Number of Question 20

Passing Score 16

Number of Tests 20

FREE Double Triple Test Online | Maryland 2024

1 . In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when air pressure drops to a level between:

2 . If manufactured after 1998, converter dollies on doubles and triples:

3 . The parking brake in a newer vehicle is applied by:

4 . When backing a trailer, you must turn the steering wheel:

5 . A low air pressure warning signal should activate:

6 . When slowing down, you should ____ to warn other drivers

7 . Move over laws require:

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