Ohio CDL Double 1 - DMV Written Test Questions with Answers - MCQGeeks.com

Q.1

A tread depth of ____ should be in every major groove of a front tire.

1/32 of an inch
2/32 of an inch
4/32 of an inch

Q.2

Why do large vehicles use air brakes?

Other brake systems squeak too loudly.
Air brakes are very effective systems.
Other braking systems are hard to come by.

Q.3

How can you check for a leak in hydraulic brakes?

Pump the brake pedal three times, then hold down the pedal for five seconds. If the pedal moves, there may be a problem.
Push the brake pedal down as far as possible and release. If the brake pedal returns to its normal position, there may be a problem.
Push the brake pedal down as far as possible and release. If the brake squeaks, there may be a problem.

Q.4

Texting while driving is especially dangerous because:

It is both a mental and physical distraction.
A message may be upsetting to the driver.
People like to read and may become too engaged in their phones.

Q.5

While driving, a driver should:

Not be concerned with what is happening on the sides of their vehicle.
Be concerned with what is happening on all sides of the vehicle.
Not be concerned with what is happening behind the vehicle.

Q.6

Vehicles with low underneath clearance may be difficult to drive:

Over railroad crossings.
In rural areas.
On wet roads.

Q.7

Glad hands should be securely connected to:

The fifth wheel.
The proper air lines.
The kingpin.

Q.8

If you don't pull a dolly out from beneath the rear trailer before unlocking the pintle hook:

The tow bar may fly up.
The kingpin may break.
The brakes may become unlocked.

Q.9

If a vehicle's Anti-Lock Braking System (ABS) is malfunctioning:

The vehicle will have no brakes.
The vehicle will still be able to brake.
The vehicle will likely travel faster than usual.

Q.10

You can confirm that a tractor protection valve is working properly by:

Disconnecting all glad hands.
Opening all of the vehicle's shut-off valves.
Releasing air with the brake pedal and waiting for the emergency signal to activate.

Q.11

When you are about to start down a hill, you should switch into a ____ gear.

Higher
Faster
Lower

Q.12

A driver should use the trailer hand valve to:

Uncouple the trailers.
Test the trailer brakes.
Apply the emergency brakes.

Q.13

During a trip, gauges are:

Often misleading.
The only way a driver can learn of potential trouble with the vehicle.
A way to learn of potential trouble with the vehicle.

Q.14

If approaching a vehicle with a distracted driver, you should:

Quickly pass the vehicle.
Maintain a safe distance from the vehicle.
Closely follow the vehicle.

Q.15

Which of the following is not a cause of hydraulic brake failure?

Loss of hydraulic pressure
Brake fade on long hills
Downshifting

Q.16

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

Q.17

Roads are especially slippery when it first begins to rain because:

Water is always very slippery.
The fresh rain mixes with oil on the roadway.
The water has nowhere to go.

Q.18

If you use the trailer hand brake while your trailer is skidding, it will:

Stop the skid.
Straighten the trailer.
Continue the skid.

Q.19

When backing with a trailer, you should begin by:

Turning the steering wheel in the direction of the turn.
Turning the steering wheel in the direction opposite of the turn.
Turning the wheel as sharply as possible.

Q.20

What does the vehicle inspection report do?

Inform the motor carrier about problems that may need fixing
Ensure that the vehicle is inspected regularly
Keep people accountable for inspecting the vehicle

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