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.
Define 'bolster':
2.
What violation occurs on the below example?
Day 1

Day 2
3.
Placing a phone call while driving:
4.
Methods to keep a cradle from sliding include:
5.
On an accident scene, if a qualified helper is present you should:
6.
Concrete pipe loaded crosswise generally:
7.
Drivers should be aware that convex mirrors will make reflections look:
8.
In case of tire failure, you should do all of the following except:
9.
Based on the following information, how much fuel can you legally add while remaining legal on the drive axles?

Percentage of fuel weight to drive axles: 25%

Weight Before Fueling: Steer: 11,275, drives: 33,800, gross: 77,420

10.
The distance the truck will travel between noticing a hazard and hitting the brakes is:
11.
A tank vehicle endorsement is required to drive tank vehicles with a combined capacity of:
12.
To prevent rolling, how many points of contact are required, at minimum, for a boulder resting on a rounded or partially rounded side?
13.
Which of these are not part of the front pre-trip inspection?
14.
What are the four basic weight limits?
15.
When securing rows of coils, requirements include all of the following except:
16.
The maximum number of "looks" allowed during the driving exam is:
17.
When securing building materials, how many knots are acceptable in the tiedown(s)?
18.
You receive a scale ticket and your drive axles are 31,700 and your trailer tandems are 35,100. Based upon a trailer with 6 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.
If you are being tailgated, you should not:
20.
While exiting the vehicle for a 'look', how many points of contact must you keep with the vehicle at all times?
21.
Any operator who refuses to submit to drug or alcohol testing, or who tests in excess of the legal limits, will be disqualified for a minimum of:
22.
Cargo and securement devices should be checked within how many miles after starting a trip?
23.
The load carrying area of a truck, trailer, or intermodal container is referred to as the:
24.
Steering wheel play should not be more than:
25.
Timber used for dunnage must be all of the following except:
26.
What are most front-wheel skids caused by:
27.
When stopping behind another vehicle, a safe gap to leave is one that:
28.
What is the main factor that will limit how far back you can slide your tandems?
29.
When calculating directional forces, 'g' is expressed as:
30.
What is the total WLL of two 20mm nylon ropes and one 5/8-inch wire rope?
31.
An outside vehicle observation will be scored every time the driver:
32.
What is the only acceptable cure for driver fatigue?
33.
Based on the following figures, how much fuel can you legally add while remaining legal on the drive axles?

Percentage of fuel weight to drive axles: 30%

Weight Before Fueling: Steer: 11,275, drives: 33,750, gross: 77,220

34.
After turning and getting up to speed:
35.
Given that general cargo securement requires a WLL of at least 50% of cargo weight, how many 1/2-inch Grade 70 chains would be required for a load of 34,500 lbs?
36.
An ABS light that comes on or stays on while driving indicates:
37.
When using tiedowns for securing cargo, what is the general rule regarding cargo length.
38.
A 'hook-lift container' is:
39.
Any CDL holder found to operating a CMV with ANY alcohol in his/her system will be placed out-of-service for a minimum of:
40.
An intermodal container is:
41.
What is the best way to determine what percentage of the weight of fuel will go to each set of axles?
42.
When a tiedown is attached directly to the cargo, what is the ideal angle where it attached to the vehicle?
43.
What is the maximum angle recommended for tiedowns securing cement pipe loaded crosswise, relative to the deck?
44.
All of the following are true of alcohol except:
45.
What is the minimum WLL used to block forward movement of cargo weighing 36,500 lbs?
46.
Whenever you double your speed, it will require how much more distance to stop?
47.
The maximum number of encroachments allowed on a particular exam exercise is:
48.
Specific hazards to watch for when traveling through work zones include:
49.
CDL drivers from New York State require the Metal Coils Endorsement when transporting metals coils weighing:
50.
When securing paper rolls with friction mats as a primary method: