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.
When merging:
2.
The most important thing you can do when dealing with an aggressive driver is:
3.
When securing concrete pipe over 45 inches loaded crosswise, which direction must the tiedowns on the rear half of the load run?
4.
When a driver stops and reverses direction to get a better position during the driving exam, it is considered a(n):
5.
On what day and time does a 14 hour rule violation occur?
Day 1

Day 2
6.
Hydroplaning:
7.
You are checking your steering and exhaust system in a pre-trip inspection. Which of these problems, if found, should be fixed before the vehicle is driven?
8.
When using stab braking, all of the following are steps except
9.
Which violation occurs on the below example?
10.
Some general signs that another driver may be distracted include which of the following:
11.
High friction securement devices include:
12.
Which of these statements about speed management is true?
13.
A stack of shortwood loaded lengthwise can be secured with one tiedown if:
14.
There are three maximum limits you must follow at all times. Those limits are:
15.
All of the following are exempt from needing a CDL except:
16.
Gross Vehicle Weight (GVW) means the following:
17.
A bulkhead is defined as:
18.
To help slow the vehicle to reduce the need for using the service brakes, some vehicles are equipped with:
19.
A tiedown is defined as:
20.
Medicine used to treat the common cold:
21.
Space to the ____ your vehicle is most important to manage.
22.
All of the following apply to farm vehicle operator CDL exemption except:
23.
What is the maximum weight that can be secured by a tiedown with a marked WLL of 5,000 lbs?
24.
Cargo is contained when:
25.
How long should it take oil pressure to come up to normal?
26.
You should try to park so that:
27.
Why did Congress enact the Bridge Formula in 1975?
28.
Every time you pull off the expressway to take a break, you use about how much time off your 11-hour driving limit?
29.
Which of these is a good thing to do when steering to avoid a crash?
30.
You are driving a 40-foot vehicle at 55 mph. The road is dry, and visibility is good. What is the least amount of space that you need to have in front of your vehicle?
31.
You are driving a heavy vehicle. You must exit a highway using an off-ramp that curves downhill. You should:
32.
You are driving a heavy vehicle with a manual transmission. You have to stop the vehicle on the shoulder while driving on an uphill grade. Which of these is a good rule to follow when putting it back in motion up the grade?
33.
In general, the best braking technique to use in maintaining a safe speed when driving on a downgrade is:
34.
Drivers must have a CDL to legally drive:
35.
Cargo securement for a load weighing 37,000 lbs must be able to withstand a minimum forward braking force of:
36.
Sliding your trailer tandems forward or backward will redistribute the weight mainly between which two sets of axles?
37.
When securing heavy vehicles, what is the minimum WLL of each tiedown?
38.
What day and time did a violation occur in the below example?
Day 1

Day 2
39.
Overall length limit on vehicles transporting machinery, poles, or structural objects is:
40.
To correct a drive wheel braking skid, you should:
41.
When backing, all of the following are important safety rules:
42.
Backing your vehicle in a straight line without crossing over or touching the exercise boundaries is called:
43.
Which of these is NOT a danger of a rough acceleration?
44.
The most common cause of skids is:
45.
All of the following are concerns for driving on offramps or onramps except:
46.
How much force is the securement system required to withstand in terms of cargo weight?
47.
Which day below contains a 30 minute break violation?
Day 1

Day 2
48.
Among other hazards, drivers should be on the lookout for slow or confused drivers, children, accidents, and:
49.
In the following picture, what are axles 4 and 5 commonly referred to as?

50.
What is a rub rail?