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.
By law, who is ultimately responsible for ensuring the safety and road-worthiness of a CMV?
2.
In case of tire failure, all of the following will be steps in your response except:
3.
Which statement is true?
4.
What time does a 14 hour rule violation occur?
5.
What is the aggregate WLL of two indirect tiedowns with a WLL of 5,000 lbs, and one tiedown with a WLL of 6,000 lbs?
6.
What does the 14 hour on duty limit mean?
7.
After taking 10 consecutive hours off duty, a driver begins to work at 8:00 a.m. The driver may operate a commercial motor vehicle until what time?
8.
To stop a drive-wheel skid, you should:
9.
Who is responsible for ensuring that the vehicles, anchor points and other securement components are in good working order?
10.
Commercial drivers are allowed to hold CDL's in how many states at the same time?
11.
The aggregate WLL for logs loaded lengthwise must be at least:
12.
When should drivers inspect their vehicles?
13.
Option #3 for securing metal coils transported with eyes lengthwise includes all of the following except:
14.
What is the minimum weight of a load of metal coils that requires specific securement practices?
15.
Service brake stopping action should be tested at:
16.
Which statement below is true?
17.
Why should drivers always be looking for hazards?
18.
What is the minimum Working Load Limit for the entire securement system?
19.
A female housing fixed to the side or ends of a vehicle to receive a stake or peg, and may also be used as an anchor point is a:
20.
Sliding the 5th wheel will change the weight distribution almost exclusively between which sets of axles?
21.
The responsibility for repairing items noted on the pre-trip report that affect safety belongs to:
22.
When is it acceptable to use amphetamines to help you stay awake while driving?
23.
Which of the following is considered on duty time
24.
If you are driving while sleepy, the safest remedy is:
25.
The 14 hour limit can be extended by:
26.
Circumstances that would make wheels and rims unsafe include the following except:
27.
All of the following should be part of the engine compartment check except:
28.
What is the 8 day / 70 hour on duty limit?
29.
Securing heavy vehicles or equipment with crawler tracks or wheel requires a minimum of how many tiedowns?
30.
When securing a non-cubic boulder with an unstable base, the four surrounding chains must have a WLL of at least:
31.
Which of these could be considered off duty time?
32.
"Fully Contained" means:
33.
Aggregate Working Load Limit is defined as:
34.
A chock is generally used to secure:
35.
If you slide the 5th wheel toward the nose of the tractor, what will be the effect?
36.
Combination vehicles must display license plates:
37.
What are the two primary laws governing the placement of the tandems?
38.
Which statement below accurately describes the 11 hour driving limit?
39.
When driving with ABS, remember:
40.
Using the following numbers, what would be the final result if you moved the 5th wheel back one hole?

steer axle: 12,300 pounds
drive axles: 33,100 pounds
Weight transfer: 500 pounds per hole
41.
A good inspection habit is for the driver to re-inspect the cargo:
42.
A major safety concern of a broken or faulty exhaust system is:
43.
You receive a scale ticket and your drive axles are 35,400 and your trailer tandems are 31,100. Based upon the two most common tandem slider rail hole spacings, what is the minimum number of holes you would have to slide the tandems to get the weight legal, and in which direction?
44.
A Class A CDL is required to drive a combination vehicle of over 26,001 lbs towing a vehicle weighing:
45.
It is safe to remove the radiator cap or any other part of the pressurized system:
46.
What is Gross Vehicle Weight Rating?
47.
Blocking is used to:
48.
When driving downhill, you should use the service brakes:
49.
Specifically prohibited in the testing area are cellphones and:
50.
When securing paper rolls with eyes crosswise, which of the following can be used to prevent side-to-side shifting when there is more than 8 inches of space to the wall?