Free New Jersey CDL General Knowledge Practice Test 2023

You are looking for actual practice for your coming CDL test? So you have come to the right place. Our NJ General Knowledge Practice Test has the same questions as the real exam which is based on the NJ CDL Manual. Our CDL practice test pack covers most of the subject areas on the New Jersey General Knowledge Test such as shifting techniques, railroad crossing safety, drunk driving laws, and much more to make you become a safer driver. In addition, each question has a detailed explanation that will help you understand the concept and answer future questions about it correctly. If you don't get the pass right away, don't worry, you can take this practice test an unlimited number of times to make sure you learn all the questions. Our CDL Practice Test NJ will refine your driving knowledge so you can earn your CDL and start driving on the roads. Let’s take our practice test now!

Our CDL practice tests:
Based on 2021 NJ commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
NJ CDL General Knowledge Test format:
50 questions
40 correct answers to pass
80% passing score
List of questions
When driving at more than 40 mph, what is the safe minimum following distance for ideal daytime conditions?
You can see a marking on a vehicle ahead of you. The marking is a red triangle with an orange center. What does the marking mean?
How many red reflective triangles are you required to carry?
On what day and time does a 14 hour rule violation occur?
Day 1

Day 2
Which of these statements about driving in areas with strong wind is true?
In case of a fire, you should pull off the road and do all of the following except:
The BAC (Blood Alcohol Concentration) for commercial drivers to be considered intoxicated when driving a commercial vehicle is:
Weight transmitted to the ground by one axle or one set of axles called:
Placing a phone call while driving:
At what time does a violation occur on this log?
Which of these statements about speed management is true?
The aggregate WLL for logs loaded lengthwise must be at least:
When should drivers inspect their vehicles?
You should be prepared to the examiner:
In case of tire failure, you should do all of the following except:
When driving in cold weather your tire tread should:
Is the below example a completed 34 hour restart?
Day 1

Day 2

When you sight-side back your vehicle into an alley stopping as close as possible to the rear of the alley it is called:
Which of the following is considered on duty time
You receive a scale ticket and your drive axles are 31,700 and your trailer tandems are 35,100. Based upon a trailer with 6 inch slider rail hole spacings, what is the minimum number of holes you would have to slide the tandems to get the weight legal, and what would the final weights be?
Which of these statements about double clutching and shifting is true?
Which of these statements about downshifting is true?
What is a reusable, transportable enclosure that is especially designed with integral locking devices that secure it to a container chassis trailer to facilitate the efficient and bulk shipping and transfer of goods by, or between various modes of transport, such as highway, rail, sea, and air.?
Most skids:
Why did Congress enact the Bridge Formula in 1975?
You are driving on a straight, level highway at 50 mph. There are no vehicles in front of you. Suddenly a tire blew out of your vehicle, what should you do first?
How does the weight of the vehicle affect stopping distance?
An example of reckless driving is:
When calculating directional forces, 'g' is expressed as:
What is the total WLL of two 20mm nylon ropes and one 5/8-inch wire rope?
The proper time to cancel your turn signal for a lane change or turn is:
A combined Tank vehicle & hazardous material endorsement will be designated with what letter on the CDL?
If you slide the 5th wheel toward the nose of the tractor, what will be the effect?
When going down a long steep downgrade you should always:
Based on the following figures, how much fuel can you legally add while remaining legal on the drive axles?

Percentage of fuel weight to drive axles: 30%

Weight Before Fueling: Steer: 11,275, drives: 33,750, gross: 77,220

What is the WLL of a 1/2-inch Grade 70 tiedown?
Given that general cargo securement requires a WLL of at least 50% of cargo weight, how many 1/2-inch Grade 70 chains would be required for a load of 34,500 lbs?
Cargo that isn't prevented from forward movement, and is 4 feet long and weighs 1,500 lbs requires a minimum of how many tiedowns?
Make sure that splash guards are properly fastened, and not:
When securing a metal coil with eyes lengthwise, all of the following are steps for securement option #1 except for:
Some common causes of vehicle fires are spilled fuel, improper fueling, under-inflated tires, and:
What is a headboard?
When driving with ABS, remember:
A driver will generally be required to have a DOT medical card in order to drive which of the following:
The condition of all in-cab controls should be checked for:
Which of the statements about an inspection of the suspension components is true?
What is the minimum number of tiedowns required through the eye of a metal coil loaded crosswise?
As part of their pre-trip cargo securement inspection, drivers should:
When securing concrete pipe over 45 inches loaded crosswise, which direction must the tiedowns on the front half of the load run?
How many days worth of logbook entries must you have available to show during an inspection?