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.
You must drive through deep or flowing water, you should not:
2.
Tourists may be hazardous because?
3.
When can your logbook be inspected?
4.
Backing of the commercial vehicle is:
5.
Whenever you double your speed, your vehicle has about how many times of destructive power if it crashes?
6.
All lights and reflectors should be operating properly, clean, and:
7.
When using tiedowns to secure boulders, all of the following are requirements except:
8.
Using 6 miles per gallon as your fuel mileage and 8 pounds per gallon for the weight of fuel, how much total fuel weight will you burn off in 600 miles?
9.
ABS malfunction lights will be what color?
10.
What is a cab shield?
11.
Major signs of tire failure could include:
12.
When securing a load of lengthwise longwood logs weighing 42,500 lbs, what is the minimum aggregate WLL required for tiedowns? (rounded up to nearest lb)
13.
You should be prepared to the examiner:
14.
What is a 34 hour restart?
15.
If you jam on the brakes and the wheels lock up and skid:
16.
Which of the following statements about speed management is true?
17.
All of the following are key parts of the steering system except:
18.
You receive a scale ticket and your drive axles are 35,700 and your trailer tandems are 30,600. Based upon a trailer with 4 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?
19.
A device placed between the deck of a vehicle and car or between articles of cargo, intended to provide greater friction than exists naturally between these surfaces is:
20.
What happens if you spend 8 hours in the sleeper berth?
21.
What is the most important reason to inspect your truck or bus?
22.
In order to drive placarded vehicles, drivers are required to have:
23.
A sided vehicle containing cargo weighing 35,980 lbs must be able to withstand a rearward force of at least:
24.
If you have a road emergency and must park on the shoulder, how soon should you put out your triangles?
25.
Which of these statements about marking a stopped vehicle is true?
26.
A load weighing 41,500 lbs requires securement against rearward force of:
27.
Which day on the example below contains a violation?
Day 1

Day 2
28.
The condition in which water or slush collects on the road and your tires lose contact and have little or no traction is called:
29.
The object of the pre-trip inspection is:
30.
Which of these actions are NOT recommended for a left turn?
31.
The tread depth on front steering wheel tires should be:
32.
An example of reckless driving is:
33.
Which vehicle will have the most difficulty staying in its lane during strong wind?
34.
If an oncoming vehicle drifts into your lane you should:
35.
A dunnage bag is:
36.
All of the following are classified as "a drink" and contain the same amount of alcohol except:
37.
What does GCWR stand for?
38.
Which of the following are covered by the specific log securement requirements?
39.
You must drive on a slippery road. Which of these is a good thing to do in such a situation?
40.
You are required to inspect your truck within how many miles after beginning the trip?
41.
Which of these items is NOT checked for a pre-trip inspection?
42.
To help stay alert while driving, when should you take breaks?
43.
What does emergency braking mean?
44.
Methods of securing building materials against forward motion include:
45.
If you have used up all of your 14 hour on duty time, how many hours would you regain after an 8 hour break in the sleeper berth?
46.
Which of the following is considered off duty time?
47.
Using the following numbers, what would be the final result if you moved the 5th wheel forward two holes?

steer axle: 10,800 pounds
drive axles: 34,100 pounds
Weight transfer: 500 pounds per hole
48.
The value specified by the manufacturer as the loaded weight of a combination vehicle is?
49.
Option #1 for securing coils transported with eyes lengthwise includes:
50.
Oil, coolant, charging circuit warning lights should go out: