Free Delaware CDL Practice Test (2026)
Practice the Delaware CDL permit test the way it is really written, with the correct answer and an explanation on every question.
Delaware CDL Requirements
5-Question DE Challenge
Real general knowledge questions, with the answer and an explanation after each one.
How do low-hanging tree branches over a right lane pose a hazard?
Delaware CDL permit test: what to expect
The written exam most people call the Delaware CDL permit test is the general knowledge test, and passing it is what gets you a commercial learner's permit rather than the license itself. You need 80% to pass, a federal standard that is the same in every state. The number of questions is set by Delaware, and our practice tests use the common 50-question format.
Once you hold the permit you have to keep it for at least 14 days before you are allowed to attempt the skills test, so it is worth sitting the written exam as early as you can. Practice below until you are clearing Delaware's standard comfortably rather than scraping it.
How to get a CDL in Delaware
To obtain a Commercial Driver's License in the Delaware, you must first pass the General Knowledge exam. Depending on the type of vehicle you intend to drive, additional endorsements like Air Brakes, Tanker, or Hazmat may be required.
- Provide proof of US citizenship or lawful permanent residency.
- Hold a valid non-commercial driver's license.
- Pass a Department of Transportation (DOT) medical exam.
- Obtain a Commercial Learner’s Permit (CLP) and wait at least 14 days.
- Pass the skills test in a vehicle of the same class as you intend to drive.
Practice every part of the Delaware CDL test
Your Delaware exam is split into separate knowledge tests. Drill each one until you're confident.
5 Delaware CDL Practice Questions and Answers
Here are 5 sample Delaware general knowledge questions with the right answer and a quick explanation for each. Read through them, then take the quiz above to see how you do without looking.
1. How do low-hanging tree branches over a right lane pose a hazard?
- A. They can drop leaves on your windshield, obscuring vision permanently.
- B. They can strike the top of your trailer, causing severe structural damage or load shifting. (correct answer)
- C. They confuse the radar systems of modern trucks.
- D. They force the truck to use more fuel.
Why: Clearance hazards aren't just bridges. Low-hanging tree branches, especially near the edge of the road, can strike the top or sides of a high trailer, tearing the roof or damaging the cargo.
2. Why should you turn on your headlights during the day when it is raining or snowing heavily?
- A. To keep the electrical system from overcharging.
- B. To communicate your presence so other drivers can see you through the precipitation. (correct answer)
- C. To melt snow off the front bumper.
- D. To see the painted lines on the road better.
Why: In adverse weather conditions, daytime visibility is greatly reduced. Headlights help you communicate your presence to other drivers.
3. You are approaching a railroad crossing with no flashing lights, but your view of the tracks is partially blocked. What should you do?
- A. Accelerate quickly to clear the tracks before a train arrives.
- B. Sound your air horn and proceed at the speed limit.
- C. Slow down, roll down your window, and be prepared to stop if a train is approaching. (correct answer)
- D. Stop completely on the tracks to look both ways.
Why: If you do not have a clear view of the tracks, you must slow down enough to be able to stop before the crossing if a train appears. Rolling down the window helps you listen for an approaching train.
4. Which of the following is a recognized type of vehicle retarder?
- A. Pneumatic
- B. Exhaust (correct answer)
- C. Centrifugal
- D. Friction
Why: The four basic types of retarders recognized in the CDL manual are exhaust, engine, hydraulic, and electric.
5. What is the minimum tread depth required for all tires on a commercial vehicle other than the front tires?
- A. 2/32 of an inch (correct answer)
- B. 4/32 of an inch
- C. 1/32 of an inch
- D. 3/32 of an inch
Why: For all tires except the front tires (such as drive and trailer tires), the minimum required tread depth is 2/32 of an inch in every major groove.
CDL Job Market in Delaware
Delaware sits right on I-95 in the Northeast Corridor, so even though it's a small state, the freight never stops moving. The Port of Wilmington specializes in auto imports, making it a top spot for car-haul drivers, one of the best-paid CDL specialties in the region. There's no sales tax, which keeps consumer goods distribution volumes high all year, and Amazon's fulfillment network in the state adds steady last-mile work.
Port of Wilmington (Citgo), Amazon DE9 Fulfillment, AstraZeneca Pharma Logistics, Delmarva Power Fleet
Delaware CDL average: about $55,000 in 2026. The Port of Wilmington is the nation's busiest auto import port by tonnage, which opens up real car-haul and drayage work on the busy I-95 mid-Atlantic corridor.