CA DMV CDL Class B Practice Test

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Questions and Answers

A pre-trip inspection should be completed:

At least once a week

Before operating the vehicle (correct)

If any problems occurred the last time the vehicle was operated

What should you do when you are driving at night?

Make sure you are driving slow enough so you can stop within range of your headlights in an emergency (correct)

Roll down your window so that the fresh air will help keep you awake

If you are sleepy, drink coffee or other caffeine products

Which of the following is the correct term for a long commercial vehicle's tendency to swing wide on turns?

Fishtailing

Sidetracking

Offtracking (correct)

When a coolant container is part of a pressurized system, which of these is true?

Check the coolant level of a hot engine Signup and view all the answers

When you are parked at the side of the road at night, you must:

Warn others by turning on your 4-way emergency flashers Signup and view all the answers

While doing the pre-trip inspection on your vehicle's steering and exhaust system you found the following problems. Which one, if any, should be fixed before you drive the vehicle?

Play in the steering wheel of more than 10 degrees (2 inches on a 20-inch steering wheel) Signup and view all the answers

Containerized loads:

Generally are used when freight is carried partway by rail or ship Signup and view all the answers

You are exiting a highway using an offramp that curves downhill and you are driving a heavy vehicle. You should:

Slow to a safe speed before the curve Signup and view all the answers

Water can safely be used on which of these fires?

Neither of the above Signup and view all the answers

Three things add up to the total stopping distance for your vehicle. They are:

Perception distance, reaction distance, breaking distance Signup and view all the answers

You are about to go down a long, steep, downhill grade in a newer truck. You should:

Use a lower gear than you would use to climb the uphill grade Signup and view all the answers

Which of these items is checked in a pre-trip inspection?

Both of the above Signup and view all the answers

If you are stopped on a one-way or divided highway, you should place reflective triangles at:

10 feet, 100 feet, and 200 feet toward approaching traffic Signup and view all the answers

When a heavy fog occurs you should:

Park at a rest area or truck stop until the fog has lifted Signup and view all the answers

You should plan ahead when you park your vehicle so that:

You are only required to pull forward when you leave Signup and view all the answers

Study Notes

Pre-Trip Inspection

A pre-trip inspection is mandatory before operating the vehicle to ensure safety.
Issues found during the previous operation should also prompt checks.

Night Driving

When driving at night, reduce speed to ensure stopping within the headlight range for emergencies.

Vehicle Maneuvering

Offtracking describes a long commercial vehicle's tendency to swing wide during turns.

Cooling System

Always check the coolant level of a hot engine; avoid removing the radiator cap while the engine is hot.

Emergency Parking

Activate 4-way emergency flashers when parked on the road at night for visibility.

Steering Issues

Excessive play in the steering wheel (over 10 degrees) must be remedied before driving.

Containerized Loads

Containerized loads frequently involve transportation via rail or ship.

Highway Exits

Slow down to a safe speed before navigating a downhill offramp with a heavy vehicle.

Fire Safety

Water should never be used on electrical or gasoline fires.

Stopping Distance

Total stopping distance comprises perception distance, reaction distance, and braking distance.

Descending Hills

On a long, steep downhill grade, use a lower gear for better control.

Pre-Trip Inspection Checklist

During a pre-trip inspection, check both cargo securement and functionality of all vehicle lights.

Reflective Triangles

If stopped on a one-way or divided highway, place reflective triangles at 10, 100, and 200 feet from the vehicle to alert approaching traffic.

Driving in Fog

In heavy fog, it’s safer to park at a rest area or truck stop until conditions improve.

Parking Planning

Plan parking to facilitate leaving without backing up more than necessary; ideally require only forward movement when departing.

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Description

Prepare for your CDL Class B license with our comprehensive practice test. This quiz features essential questions covering pre-trip inspections and safe driving practices, particularly at night. Perfect for anyone looking to validate their knowledge before the exam.