meta-pixelYou should not use the trailer hand valve while driving because
favicon
CDL Prep: Exams & Study Guides
Ace your CDL Exam in one take.
Join 50,000+ users around America to get your Commercial Driver License today!
apple-storegoogle-play
qrcode
Question:

You should not use the trailer hand valve while driving because

Answer: of the danger of making the trailer skid.

This question is in Section 4: Other Topics of our CDL Test Guide. Explore now!
Related Question

Question: If you have a B:C type fire extinguisher, what is it suitable for dealing with?

Electrical fires and burning liquids

B:C type extinguishers are only suitable for electrical fires and burning liquids; i.e., for fires that you cannot use water to put out. You need an A:B:C type extinguisher for wood, paper and cloth fires.

Question: If you have a second conviction for DUI while operating either a CMV or your personal vehicle, what is the minimum amount of time you will lose your CDL privileges?

Life

While there are serious consequences for a first DUI conviction, regardless of what you're driving, the state of Massachusetts gives you an opportunity to get help and turn your life around before you lose your CDL privileges. A second conviction takes that chance away due to federal laws, and means you'll have to seek a new profession.

Question: The application pressure gauge shows how much air pressure you:

Are applying to the brakes.

Question: You are driving on a slippery road during the day. What does the Driver's manual say about how much space you should keep ahead of your truck?

Allow much more space than is needed for ideal driving conditions.

Question: The golden rule for school buses when approaching and crossing railroad tracks is

Stop, look, and listen

CDL Prep: Exams & Study Guides Blog

How to Handle Difficult Customers as Delivery Truck Drivers
How to Handle Difficult Customers as Delivery Truck Drivers
Handling difficult customers is necessary to succeed in this line of work. This article will discuss some tips and strategies for handling difficult customers as delivery truck drivers.
a year ago
Team Driving vs. Solo Driving What is Better
Team Driving vs. Solo Driving What is Better
Long-distance driving has two options: team driving for faster delivery but requiring teamwork, and solo driving for independence but requiring sole responsibility for the trip.
a year ago
The Best Trucker Apps to Help You on Roadway - CDL Prep
The Best Trucker Apps to Help You on Roadway - CDL Prep
The best trucker GPS app is helpful since driving a truck can be challenging and demanding, especially when navigating unfamiliar routes and finding the best truck-friendly roads.
a year ago
See MoreSee More