CDL PRACTICE TEST (MD) - GENERAL KNOWLEDGE TEST
11.
Placards are:
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a type of safety equipment.
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devices placed below a vehicle to improve traction.
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signs put inside a vehicle used to warn others of hazardous materials.
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signs placed on a vehicle to identify the hazard class of the cargo.
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12.
Which of these is NOT something you should check during the pre-trip inspection of the engine compartment?
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Brake controls
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Worn electrical wiring insulation
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Coolant level in radiator
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Engine oil level
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13.
When the wheels of a trailer lock up, the trailer will tend to swing around. This is more likely to happen when:
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the trailer is empty or lightly loaded.
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the trailer is overloaded.
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the trailer is fully loaded.
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None of the above.
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14.
Which of the following trailers can get stuck on raised crossings?
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Lowboy
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Moving van
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Car carrier
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All of the above.
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15.
If you are carrying a heavy load that is slowing you down, you should:
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drive in the right lane.
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keep the vehicle in third gear.
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drive in the left lane.
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drive on the shoulder.
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16.
When you are driving in heavy traffic, the safest thing to do is to:
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drive 10 mph below the speed of other traffic.
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drive 10 mph below the speed limit.
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drive at the speed of other traffic (without going at an illegal or unsafe speed).
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drive at the posted speed limit.
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17.
To warn drivers behind you that you will be slowing down, you should:
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turn on the parking, clearance and side-marker lights.
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turn on the right and left turn signals at the same time.
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tap your brake pedal a few times to flash your brake lights.
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turn on the 4-way emergency flashers.
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18.
If you experience a tire failure, do NOT:
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stay off the brake (unless you're about to run into something).
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apply the brakes as hard as you can.
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hold the steering wheel firmly.
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when the vehicle has slowed down, brake very gently, pull off the road, and stop.
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19.
Air tank drains:
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are used to remove water and oil from the air tanks.
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should not be used in wet weather.
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protect the tanks and the rest of the system from too much pressure.
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are used to move air to the brakes.
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20.
Which of the following is NOT one of the four basic skills required to operate a commercial motor vehicle?
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Steering
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Accelerating
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Backing safely
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First-aid certification
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