CA DMV CDL Class B Practice Test
Questions And Answers
A pre-trip inspection should be completed:
(A) at least once a week
(B) if any problems occurred the last time the vehicle was operated
(C) before operating the vehicle -
correct answer ✅(C) before operating the vehicle
What should you do when you are driving at night?
(A) Make sure you are driving slow enough so you can stop within
the range of your headlights in an emergency.
(B) Roll down your window so that the fresh air will help keep you
awake
(C) If you are sleepy, drink coffee or other caffeine products -
correct answer ✅(A) Make sure you are driving slow enough so
you can stop within range of your headlights in an emergency
Which of the following is the correct term for a long commercial
vehicle's tendency to swing wide on turns?
(A) Sidetracking
(B) Offtracking
(C) Fishtailing -
correct answer ✅(B) Offtracking
,CA DMV CDL Class B Practice Test
Questions And Answers
When a coolant container is part of a pressurized system, which of
these is true?
(A) Check the coolant level of a hot engine
(B) Safely remove the radiator cap and add coolant while the engine
is hot
(C) Use water only in the cooling system -
correct answer ✅(A) Check the coolant level of a hot engine
When you are parked at the side of the road at night, you must:
(A) warn others by turning on your 4-way emergency flashers.
(B) Put your warning devices out within 15 minutes
(C) Use your left turn signal lights to give warning to other drivers -
correct answer ✅(A) Warn others by turning on your 4-way
emergency flashers
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?
(A) Too many vertical stacks
(B) Oil on tie rod
, CA DMV CDL Class B Practice Test
Questions And Answers
(C) Play in the steering wheel of more than 10 degrees (2 inches on
a 20-inch steering wheel) -
correct answer ✅(C) Play in the steering wheel of more than 10
degrees (2 inches on a 20-inch steering wheel)
Containerized loads:
(A) are exempt from hazardous materials restrictions
(B) are exempt from weight limit restrictions
(C) generally are used when freight is carried part way by rail or
ship -
correct answer ✅(C) generally are used when freight is carried part
way by rail or by ship
You are exiting a highway using an offramp that curves downhill and
you are driving a heavy vehicle. You should:
(A) do nothing because the posted speed limit for the offramp is
usually 10 miles per hour below the safe speed limit for the
offramp.
(B) Slow to a safe speed before the curve
(C) Downshift after you are in the curve -
correct answer ✅(B) slow to a safe speed before the curve
Questions And Answers
A pre-trip inspection should be completed:
(A) at least once a week
(B) if any problems occurred the last time the vehicle was operated
(C) before operating the vehicle -
correct answer ✅(C) before operating the vehicle
What should you do when you are driving at night?
(A) Make sure you are driving slow enough so you can stop within
the range of your headlights in an emergency.
(B) Roll down your window so that the fresh air will help keep you
awake
(C) If you are sleepy, drink coffee or other caffeine products -
correct answer ✅(A) Make sure you are driving slow enough so
you can stop within range of your headlights in an emergency
Which of the following is the correct term for a long commercial
vehicle's tendency to swing wide on turns?
(A) Sidetracking
(B) Offtracking
(C) Fishtailing -
correct answer ✅(B) Offtracking
,CA DMV CDL Class B Practice Test
Questions And Answers
When a coolant container is part of a pressurized system, which of
these is true?
(A) Check the coolant level of a hot engine
(B) Safely remove the radiator cap and add coolant while the engine
is hot
(C) Use water only in the cooling system -
correct answer ✅(A) Check the coolant level of a hot engine
When you are parked at the side of the road at night, you must:
(A) warn others by turning on your 4-way emergency flashers.
(B) Put your warning devices out within 15 minutes
(C) Use your left turn signal lights to give warning to other drivers -
correct answer ✅(A) Warn others by turning on your 4-way
emergency flashers
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?
(A) Too many vertical stacks
(B) Oil on tie rod
, CA DMV CDL Class B Practice Test
Questions And Answers
(C) Play in the steering wheel of more than 10 degrees (2 inches on
a 20-inch steering wheel) -
correct answer ✅(C) Play in the steering wheel of more than 10
degrees (2 inches on a 20-inch steering wheel)
Containerized loads:
(A) are exempt from hazardous materials restrictions
(B) are exempt from weight limit restrictions
(C) generally are used when freight is carried part way by rail or
ship -
correct answer ✅(C) generally are used when freight is carried part
way by rail or by ship
You are exiting a highway using an offramp that curves downhill and
you are driving a heavy vehicle. You should:
(A) do nothing because the posted speed limit for the offramp is
usually 10 miles per hour below the safe speed limit for the
offramp.
(B) Slow to a safe speed before the curve
(C) Downshift after you are in the curve -
correct answer ✅(B) slow to a safe speed before the curve
