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Free District of Columbia 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 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 2021 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
Study now
List of questions
1.
When is the driver responsible for inspecting cargo and securing devices?
2.
You are driving on a clear night. You must dim your headlights from high to low. You should adjust your speed so that you can stop within:
3.
Which of these statements about backing a heavy vehicle is true?
4.
What is the proper way to hold a steering wheel?
5.
The cargo securement standard applies to commercial vehicles weighing more than:
6.
You should lightly apply your brakes to flash the brake lights if:
7.
When driving in very hot weather, it is critically important to carefully inspect:
8.
Using radar detectors in commercial vehicles:
9.
A stake pocket is:
10.
By definition, what is a wedge?
11.
When driving in cold weather your tire tread should:
12.
Touching or crossing over a boundary line during the driving exam is considered a(n):
13.
Most serious skids result from:
14.
A cleat is a short piece of wood used:
15.
It is accepted that friction mats provide a resistance to horizontal movement equal to:
16.
What does emergency braking mean?
17.
When securing paper rolls on a flatbed or curtainside vehicle, it is acceptable to stack rolls with eyes vertical:
18.
When securing paper rolls with eyes horizontal, which of the following should be used to secure the rear-most roll?
19.
Backing into a space that is to the right rear of your vehicle is referred to as:
20.
Who enforces HOS regulations?
21.
In cargo securement, the deck is:
22.
A combination of securing devices which form an assembly that attaches cargo to, or restrains cargo on, a vehicle or trailer, and is attached to anchor point(s) is a:
23.
You are checking your wheels and rims for a pre-trip inspection. Which of these statements is true?
24.
Which of these is true about tire pressure?
25.
Which of the following is NOT a requirement for shortwood loaded lengthwise?
26.
Brake fade:
27.
A tiedown with a marked WLL of 8,000 lbs directly attached to an article has an actual WLL of:
28.
When activated, retarders apply braking power when:
29.
Which of the following is not a requirement of wood used as blocking or bracing?
30.
When turning quickly in an emergency, which of the following applies:
31.
In a pressurized cooling system, coolant level should be checked:
32.
'Blocking' is defined as:
33.
What is the minimum requirement for securing roll-off and hook containers?
34.
When you are passing a vehicle, pedestrian, or bicycle you should assume that:
35.
When vehicles towing trailers go into a drive-wheel skid, the trailer can push the towing vehicle sideways, causing a:
36.
What should you do while turning?
37.
High beams should only be used at a distance of:
38.
During the Stop/Start maneuver, when stopped, your vehicle:
39.
What hours must your logbook show?
40.
What is a headboard?
41.
What is the maximum legal weight for the drive axles or trailer tandems?
42.
Generally, when steering in an emergency, which direction is your best option?
43.
When securing a single metal coil with eye vertical, tiedowns must be arranged according the all of the following except:
44.
While driving, the freight must not:
45.
Sliding your trailer tandems toward the front or back of the vehicle will primarily change the weight distribution between which sets of axles?
46.
During the vehicle inspection, checking of ___ will NOT prevent a fire.
47.
What violation has occurred at 8:00 a.m. on Day 2?
Day 1

Day 2
48.
When securing concrete pipe over 45 inches loaded crosswise, which direction must the tiedowns on the front half of the load run?
49.
The pre-trip inspection should generally include how many steps?
50.
Shifting gears on most heavy vehicles using manual transmissions will require:
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