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.
You are driving at night and you must dim your headlights for traffic. Good speed management says you should:
2.
What is the minimum weight of a shipment of paper rolls that would require specific securement requirements?
3.
What is the minimum WLL of each tiedown used to secure crushed or flattened vehicles?
4.
A vertical barrier across the front of the deck of a vehicle to prevent forward movement of cargo is a:
5.
Which of these statements about driving in areas with strong wind is true?
6.
All of the following are requirements for dividing vehicles over 33ft except:
7.
Which of the following can be used as part of the cargo securement system?
8.
When starting a bus on a level surface with good traction there is often no need for:
9.
When making a left turn, you should do which of the following?
10.
When approaching a railroad crossing, which of these safety precautions applies?
11.
Retreaded, recapped, or regrooved tires are allowed on the front wheels of a bus when?
12.
To test for leaks on hydraulic brake systems:
13.
Which of the statements about pre-trip inspection is true?
14.
Which of these statements about drugs is true?
15.
Which of the following are not a primary factor affecting weight distribution across the axles?
16.
Cargo inspection:
17.
For safer night time driving, windshields and mirrors should be:
18.
If you load cargo into the overhang portion of the trailer, what will be the result?
19.
Three serious traffic violations in a 3-year period will result in a CDL disqualification of:
20.
Which of the following is not true of Working Load Limit (WLL)?
21.
When driving through the work zone you should:
22.
What is the minimum securement requirement for paper rolls with eyes vertical with a width between 1.25 and 1.76 its diameter?
23.
EOBR's are required to automatically record which of the following?
24.
In what circumstance can shortwood be treated as longwood?
25.
What violation has occurred at 10:00 a.m. on Day 2?
Day 1

Day 2
26.
The engine brake effect is greater when the engine is _____ governed RPM and the transmission is on a _____ gear.
27.
What happens if an EOBR malfunctions?
28.
What should you do if you are unsure whether you have enough overhead clearance?
29.
When driving at night you should use your high beams when oncoming traffic is not within ____ feet?
30.
The best way to take a curve is to slow to a safe speed before entering the curve, then __________ as you go through it.
31.
Using 7 miles per gallon as your fuel mileage and 8 pounds per gallon for the weight of fuel, how much total fuel weight will you burn off in 210 miles?
32.
Should brake adjustment be checked often?
33.
You are checking your brakes and suspension system for a pre-trip inspection. Which of these statements is NOT true?
34.
What is the minimum aggregate WLL of all tiedowns in a group of concrete pipe?
35.
Can state inspectors inspect your truck or bus?
36.
Some common causes of vehicle fires are spilled fuel, improper fueling, under-inflated tires, and:
37.
When parked on the side of a two-lane road carrying traffic in both directions, place warning devices:
38.
Vehicles should be equipped with all of the following emergency equipment except:
39.
Working Load Limit (WLL)is defined as:
40.
Containerized loads:
41.
All of the following are good tips to staying fit and ready to drive except:
42.
What is the minimum number of tie-downs to be used on flatbed cargo?
43.
How much space in front of you is needed while driving on a highway?
44.
What can be the result of too much weight on the back of the trailer?
45.
Your trailer has a 6 inch hole spacing in the tandem slider rail and your trailer tandems are 900 pounds overweight. What is the minimum number of holes you will have to slide the tandems to get the tandems within legal limits?
46.
What is the minimum number of tiedowns required through the eye of a metal coil loaded crosswise?
47.
What is the minimum WLL of a tiedown used to secure logs?
48.
Where will the weight of fuel be distributed?
49.
Improperly loaded or secured cargo:
50.
According to the general rule, for how much space should you leave in front of your vehicle at speeds below 40 mph?