DELAWARE CDL PRACTICE TEST - GENERAL KNOWLEDGE

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The CDL general knowledge test is required to be taken by all CDL applicants. The Delaware CDL test consists of 50 questions. To pass, you must correctly answer at least 40 questions (80%). The general knowledge test covers the contents of the Delaware CDL Manual. All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Vehicle Inspection Test, Basic Control Skills Test, Road Test. In addition, the Class A CDL test will include questions based on the Combination Vehicles section. Take this CDL practice test now to prepare for the actual DE general knowledge test! To get your CDL, you must pass both the knowledge and skills tests. CDL knowledge tests include: General Knowledge, Passenger Transport, Air Brakes, Combination Vehicles, Hazardous Materials, Tanker Vehicles, Doubles/Triples, School Bus, Firefighter. Depending on what class of license (A, B or C) and endorsements you need, you must take one or more knowledge tests. A special endorsement is also required to drive certain types of vehicles. The following endorsements may be used with a Class A, B or C CDL: HazMat (H), Tank Vehicles (N), Tank Vehicles Transporting Hazardous Materials (X) and Passenger Transport (P). The School Bus endorsement (S) is only available for Class A or B CDL, and the Doubles/Triples endorsement (T) is only available for Class A driver's licenses.
1. If you perform the skills test in a vehicle that is not equipped with air brakes:
you will be required to operate vehicles with air brakes.
you will be restricted from operating vehicles with air brakes.
you will be required to take the tank vehicle test.
you will be required to operate a CMV without hydraulic brakes.
2. _____ is a thin layer of ice that forms on road surfaces.
Black ice
Blue ice
White ice
Grey ice
3. In vehicles with air brakes, the air compressor governor:
controls how much air the air compressor will pump into the air storage tanks.
controls when the air storage tanks will pump air into the air compressor.
controls when the air compressor will pump air into the air storage tanks.
None of the above.
4. When stopping at the scene of an accident, you should NOT:
put on your 4-way emergency flashers.
set out reflective triangles.
report any qualified person who is at the accident and helping the injured.
notify authorities.
5. If your tires are hot, you should NOT:
drive until you correct the cause of the overheating.
once the tires have cooled down, make another stop to check the tires.
stop to let the tires cool down.
let air out of the tires so the pressure goes back to normal.
6. Your safety equipment must include:
a dimmer switch.
spare electrical fuses (only if your vehicle is equipped with circuit breakers).
an inter-axle differential lock.
a properly charged and rated fire extinguisher.
7. The weight of a truck:
has an impact on stopping distance.
is not as important as the vehicle's center of gravity in determining stopping distance.
has no effect on stopping distance.
None of the above.
8. When backing, it is important to use a helper whenever possible. Why?
To make sure you don't damage your truck.
Because you cannot see everything behind your vehicle.
All the above.
Because it's required by law.
9. An alcohol evaporator is important during:
windy weather.
hot weather.
dry weather.
cold weather.
10. If you let air out of hot tires:
as the tire cools, the air pressure will be too low.
air pressure will increases, causing the tires to blow out.
the tires will cool off much sooner.
None of the above.
 
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Frequently Asked Questions

  • If you are between the ages of 16 and 18 or are under 22 years old and receiving special education services through the Individualized Education Program (IEP), you qualify for the Graduated Driver License (GDL) program. This program allows you to obtain a learner’s permit. After completing 12 months of the GDL program, if your sponsor hasn't withdrawn their endorsement and your driving record is clear, your permit will convert to a class D license. 
  • If you are 18 years or older and choose not to participate in the GDL program, no sponsor is required, but you'll need to undergo an eye, knowledge, and road skills examination at the DMV to obtain your driver's license.
Apply in person at any Division of Motor Vehicles office in Wilmington, New Castle, Dover, or Georgetown. Verify where the nearest Delaware DMV office is and check its business hours before going. 

You need to bring specific documents: 

  • Proof of identity (e.g., certificate of birth or valid passport).
  • Two proof of Delaware residency, displaying your physical address and being valid within the last 60 days. Acceptable documents include utility bills, credit card statements, insurance policies, and employment records.
  • Proof of legal name change (if available).
  • Proof of passing a Certified Delaware Driver Education Course for those under 18.

For a guide on acceptable documents, you can refer to the official Document Selector Guide.
If you cannot read or speak English, translators are permitted during the DMV written test. The applicant is responsible for scheduling and paying a translator who will read the questions. However, the road sign section must be completed without any additional assistance.
To get ready for the Delaware DMV written test, start by reading the Delaware Driver’s Handbook. This manual has all the info you need to study for the exam: traffic signs, road rules, and safe driving practices. Then, check what you've learned with our free practice tests and consider signing up for DMV Premium to access additional resources!
The Delaware DMV test comprises 30 questions. It is designed to evaluate your knowledge of general driving laws, safe driving practices, and road signs. You should study the manual carefully to ensure your success on the first attempt.

You need an accuracy rate of 80% or higher, which means you are allowed up to 6 wrong answers. Be cautious and read thoroughly the questions.

New drivers in Delaware with a learner's permit face specific restrictions:
  • You must carry the permit with you when driving.
  • You and your passengers must wear safety belts.
  • You cannot use a cell phone while driving.
  • You cannot transport other people, except for an adult supervisor and one other passenger or your family members, for the first 12 months.
  • Under mandatory supervision, the supervisor must be a properly licensed parent, guardian, or approved adult driver, at least 25 years old, with a class D license for a minimum of 5 years.

For the first six months:
  • You must be supervised at all times.
  • The sponsor must certify that the permit holder has driven for 50 hours, including 10 hours of nighttime driving, and submit the certification to the Department of Education after the initial six months.

After the first six months:
  • You may drive unsupervised only between 6:00 a.m. and 10:00 p.m.
  • You may drive between 10:00 p.m. and 6:00 a.m. if supervised or for specific exceptions such as church, work, and school activities.
  • Passenger restrictions continue, allowing only the adult supervisor and one other passenger during unsupervised driving.
In Delaware, your learner's permit is valid for 6 months. You can extend it once before it expires by paying a fee. This waiting period ensures you have ample time to gain valuable driving experience and feel confident before the exam.

DE CDL Practice Test

Number of questions: 50
Correct answers to pass:40
Passing score:80%
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