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The two most important reasons for using mirrors when merging into traffic are?


A) To ensure that you are not being tailgated
B) To make sure a gap in traffic is large enough for your vehicle
C) To get a sense of the speed needed to merge into the traffic
D) A and B
E) B and C

Correct Answer

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If a commercial driver gets stuck on railroad tracks and cannot move forward or backward, they should:


A) Get out and away from the vehicle.
B) Check the crossing signal housing for emergency contact information.
C) Call 911.
D) Relay the location of the crossing and its DOT number to authorities.
E) All of the above

Correct Answer

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What should the air pressure loss be in a combination vehicle with a fully charged air brake system?


A) Less than 2 psi per minute
B) Less than 3 psi per minute
C) Less than 4 psi per minute
D) Less than 5 psi per minute

Correct Answer

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When making a left hand turn and there are two turning lanes, commercial drivers should use:


A) The left hand lane
B) The right hand lane
C) It does not matter.
D) Straddle both lanes to make this type of turn.

Correct Answer

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When entering or crossing traffic, commercial drivers must be aware of which of the following factors?


A) The weight of their vehicle
B) The size of their vehicle
C) Oncoming traffic
D) Pedestrians and bikers
E) All of the above

Correct Answer

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Acceleration is a factor when entering traffic for commercial vehicles because:


A) Large vehicles pick up speed slowly.
B) Large vehicles need more gap to merge into traffic.
C) Large vehicles need to shift more often.
D) A and B
E) B and C

Correct Answer

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If you need to park or pull over on the side of a road, you should use:


A) Headlights and clearance lights only
B) Headlights and brake lights
C) Headlights, clearance lights and four-way emergency flashers
D) No headlights, but use clearance lights

Correct Answer

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In terms of over-wide, over-long, or over-weight loads, which of the following statements is TRUE?


A) These types of loads rarely require special permits.
B) These types of loads often require special permits.
C) Drivers are not required to carry permits with them on the road.
D) Special equipment for these loads is rarely needed.

Correct Answer

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A major cause of commercial vehicle accidents is driver distraction. Which of the following would be considered distractions while driving?


A) Talking to passengers
B) Reading maps or directions
C) Adjusting controls on the dash
D) Talking on cell phone
E) All of the above

Correct Answer

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When approaching a railroad crossing, a full stop is required when:


A) The stop is mandated by law.
B) State or federal regulations mandate that a full stop be made because of the type of cargo being hauled.
C) The driver is operating a bus.
D) All of the above

Correct Answer

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D

During normal driving conditions, drivers should handle the steering wheel in this manner:


A) Two hands placed at the top of the wheel
B) Hands placed at the bottom of the wheel
C) Hands placed at opposite sides of the wheel
D) It is up to the driver; whatever feels comfortable.

Correct Answer

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Generally speaking, if a load projects beyond the rear of the trailer by 48 inches or more, that load must have:


A) A solid red or fluorescent orange flag at least 12 inches square attached to it
B) A solid red or fluorescent orange flag at least 6 inches square attached to it
C) Any type, color, or size of flag attached to it
D) None of the above

Correct Answer

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Having too much weight on the steering axles can cause which of the following problems?


A) Make the vehicle unsafe to drive
B) Cause the steering to be difficult
C) Cause damage to the tires
D) Cause damage to the steering axle
E) All of the above

Correct Answer

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What should the air pressure loss be in a single vehicle with a fully charged air brake system?


A) Less than 2 psi per minute
B) Less than 3 psi per minute
C) Less than 4 psi per minute
D) Less than 5 psi per minute

Correct Answer

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While on the road, commercial drivers need to check their mirrors often for which of the following conditions?


A) Vehicles that may be on the sides of your vehicle
B) Vehicles that may be in back of your vehicle
C) Vehicles that may be passing you
D) To ensure it is safe to make a lane change
E) All of the above

Correct Answer

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Concerning a train's warning horn, commercial drivers should:


A) Assume they will hear it as it is very loud.
B) Never assume they will hear it because cab noise may hide it.
C) Rely on the horn more so than their own visual inspection of the track.
D) None of the above

Correct Answer

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B

If stopped on an incline, which of the following is the best way to prevent the vehicle from rolling backwards?


A) Keep the vehicle in gear and "ride" the clutch.
B) Shift into neutral.
C) Apply the parking brake.
D) Keep the vehicle in gear, and depress the clutch and brake at the same time.

Correct Answer

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Combination truck drivers must always keep their mirrors adjusted. Correct mirror adjustment can only be made:


A) When the trailer is not attached to the tractor
B) When the vehicle is on the road
C) When the trailer is attached at any angle
D) When the trailer is attached and straight

Correct Answer

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The braking power of retarders works on which of the following wheels?


A) The front wheels
B) The drive wheels
C) The trailer or rear wheels
D) All wheels

Correct Answer

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B

When backing a trailer that has begun to drift off course, drivers should:


A) Turn the bottom of the steering wheel in the opposite direction.
B) Turn the bottom of the steering wheel in the same direction.
C) Turn the top of the steering wheel in the opposite direction.
D) Turn the top of the steering wheel in the same direction.

Correct Answer

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