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.
Which of these is NOT something you should do if your headlights are not working properly?
2.
When is it necessary to learn how a fire extinguisher works?
3.
If you are stopped at a roadside rest area and found to have a BAC (Blood Alcohol Concentration) of 0.02 you will:
4.
What should be true about other drivers:
5.
As the blood alcohol concentration (BAC) goes up, what happens?
6.
Hazmat placards are what shape?
7.
Making sure that the cargo is not overweight is the responsibility of:
8.
When road lighting is poor or confusing, you should:
9.
When loading and securing a boulder, it should be:
10.
How many knots are acceptable in a properly working tiedown?
11.
In cargo securement, a wedge is defined as:
12.
Snow and ice must be removed from the radiator because otherwise:
13.
A container chassis vehicle is defined as:
14.
Which means of securement is prohibited when transporting coils with
the coil eye crosswise on the vehicle?
15.
What is the maximum allowable weight on a 5-axle combination vehicle?
16.
What is the Aggregate WLL of the securement system for a load secured with 7 tiedowns: 3 rated at WLL of 4,000 lbs, 2 at 6,500, and 1 at 8,000?
17.
When shifting you should do all of the following except:
18.
You should signal continuously while turning because:
19.
Why should you always plan on arriving to your destination as quickly as possible?
20.
When hauling livestock, to prevent them from moving around too much and causing a dangerous situation you would use:
21.
What does EOBR stand for?
22.
When securing concrete pipe with a diameter of more than 45 inches loaded crosswise, how many tiedowns are required through each pipe at minimum?
23.
Impaired drivers who present potential hazards may tend to:
24.
In case of brake failure, methods of stopping the vehicle include escaping into an open field, side street, or ramp, and:
25.
Drivers are generally only allowed to use cell phones or text in all of the following situations except:
26.
What is the minimum WLL required of tiedowns securing loaded intermodal containers on non-chassis vehicles?
27.
Which of these statements about cargo loading is true?
28.
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?
29.
If you are forced to leave the road in an emergency, all of these are good guidelines except:
30.
When exiting or entering on a curved freeway ramp, you should:
31.
Which of the following is not a reason why loads should be secured?
32.
If you increase your speed from 20 to 60 mph (original speed times 3), how much more braking distance is required at 60 mph than at 20 mph?
33.
When banding paper rolls with eyes vertical, you should:
34.
Controlled braking:
35.
When changing lanes, put you turn signal on, and:
36.
To protect the area after an accident, steps you should take include:
37.
Which of these statements about overhead clearance is true?
38.
If you must drive in fog, some considerations include which of the following:
39.
Specific parts of the CDL driving and skills exam include which of the following?
40.
If loading and securing paper rolls on a second layer:
41.
What happens to tar on the road pavement during hot weather?
42.
A device placed on the exposed edge of an article to distribute tiedown forces over a larger area of cargo than the tiedown itself, to protect the tie-down and/or cargo from damage, and to allow the tiedown to slide freely when being tensioned is a:
43.
Which of these lights cannot be checked at the same time?
44.
When involved in an accident and not seriously injured, basic steps you should take include assist the injured, notify authorities, and:
45.
Indirect tiedowns create what direction of force?
46.
Which of these is the most important thing to remember about emergency braking?
47.
In terms of cargo securement, what is a 'well'?
48.
You should try to avoid driving in fog:
49.
The purpose of hazmat rules includes all of these except:
50.
If you're able to arrive early for a delivery, you should: