Free District of Columbia CDL General Knowledge Practice Test 2022

You are looking for actual practice for your coming CDL test? So you have come to the right place. Our DC General Knowledge Practice Test has the same questions as the real exam which is based on the DC CDL Manual. Our test covers most of the subject areas on the District of Columbia 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 DC CDL practice test an unlimited number of times to make sure you learn all the questions. Our tests will refine your driving knowledge so you can earn your CDL and start driving on the roads. Let’s take our free CDL practice test now!

Our CDL practice tests:
Based on 2022 DC commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
DC CDL General Knowledge Test format:
50 questions
40 correct answers to pass
80% passing score
List of questions
1.
What are the Federal standards for the gross vehicle weight of a 5 axle commercial vehicle?
2.
Why should you try to move to your right when steering in an emergency?
3.
To help you to stay alert while driving, you should:
4.
You are driving on a clear night with your low beam lights on. If your headlights let you see about 250 feet ahead of you, you should adjust your speed so that you can stop within about _____ feet.
5.
Which of these pieces of emergency equipment should always be carried in your vehicle?
6.
Which may be a sign of tire failure?
7.
Why is it important to shift gears correctly?
8.
Weight transmitted to the ground by one axle or one set of axles called:
9.
You are checking your brakes and suspension system for a pre-trip inspection. Which of these statements is true?
10.
Securing cargo on a flatbed trailer is typically done using:
11.
If the cargo is fully contained in a sided vehicle, what is the minimum requirement for withstanding sideways force?
12.
You are driving a vehicle that could be driven safely at 55 mph on an open road. But traffic is heavy and other vehicles drive at the speed of 35 mph, though the speed limit is 55 mph. The safest speed for your vehicle is more likely to be:
13.
Cargo with a high center of gravity:
14.
In cargo securement, a 'well' is defined as:
15.
Besides prescription drugs verified by a doctor as safe for driving, what other drugs are acceptable while driving?
16.
Which of these is not required knowledge for drivers seeking a hazardous material endorsement?
17.
When securing rolls of paper with eyes vertical, how many points of contact are required to consider a roll secure?
18.
California allows 20,000 pounds maximum on the steer axle. The tread width of your tires is 11 inches, and the load rating on your steer tires is 7000 pounds. How much weight can you carry on your steer axle in California?
19.
What is the minimum amount of rearward force that a cargo securement system must withstand?
20.
The bridge formula:
21.
When should you test your parking brakes?
22.
Using the following numbers for your calculations, how much weight will come off your steer axle?


Miles per gallon: 7
Miles travelled: 280
Percenatage of fuel weight on steer axle: 80%
23.
Distracted driving could be any of the following except:
24.
To secure paper rolls with eyes horizontally against rearward movement, you can use which of the following except:
25.
Which of the following headlight issues can be hazardous?
26.
Is the below example a completed 34 hour restart?
Day 1

Day 2
27.
When making a right turn, all of the following are good technical practices except:
28.
What is the minimum angle that indirect tiedowns must form with the vehicle?
29.
Specific securement methods are required for boulders that:
30.
Which of the following vehicles will have the longest stopping distance?
31.
What is the cargo's center of gravity?
32.
A minimum disqualification of 12 months will result for any driver who:
33.
"Brake fade" is:
34.
What is the primary goal of implementing the Bridge Formula?
35.
You should use your horn when:
36.
One option of positioning bundles of building materials is:
37.
Is the following example within legal HOS limits?

- A trucker starts driving at 12:00pm
- At 5pm the driver takes a 1 hour break
- At 6pm the driver begins driving again
- At 11:30pm, the driver shuts down and goes off duty for 10 consecutive hours
38.
Putting too much weight towards the rear may cause all of these except:
39.
You should stop driving:
40.
What is the maximum ideal angle for an effective direct tiedown?
41.
What kind of extinguisher should be used on burning paper, wood, or cloth?
42.
When securing a paper roll with a width that is more than twice its diameter, which of the following is not an acceptable method of securement to prevent tipping?
43.
Heavy vehicles often move slower than others. Which of these is NOT a good rule to follow while driving a heavy vehicle?
44.
Some suggestions for reducing stress and aggressiveness while driving might include all of the following except:
45.
Posted heights at overpasses:
46.
You have steer tires rated at 6,150 pounds each, and you're in the state of West Virginia which says the legal limit for the steer axle is 20,000 pounds. What's the maximum legal weight you can carry on your steer axle in West Virginia?
47.
When securing paper rolls with eyes vertical in a sided vehicle all of the following are acceptable except:
48.
What violations occurred on the below example?
49.
On combination vehicles longer than 20 feet or wider than 80 inches, amber or yellow reflectors must be installed:
50.
The maximum number of allowable looks and/or pull-ups on any particular exam exercise is: