General Driving Knowledge — Delaware
Delaware CDL practice test: 443 free practice questions (Based on the official driver handbook). The official format is not yet verified; check the official site before your test. General Driving Knowledge: 161 questions.
Questions that do not fit a single topic: lane use, turning, signalling and other rules of the road.
This topic page is still being reviewed against the official handbook. Until review is finished it is hidden from search engines.
| Topic / Metric | Value |
|---|---|
| Topic | General Driving Knowledge |
| License test | Delaware CDL permit (CLP) knowledge tests |
| Topic questions | 161 (36% of 443 total) |
| Review status | This topic page is still being reviewed against the official handbook. Until review is finished it is hidden from search engines. |
Official handbook
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Questions (161)
1. When applying for an original or renewed HazMat endorsement, you must undergo a background check through which agency?
- The Transportation Security Administration ✓
- The Federal Bureau of Investigation
- The Department of Energy
Answer: A. The Transportation Security Administration
You must undergo the HazMat background check through the Transportation Security Administration. The handbook says the USA Patriot Act requires background checks for hazardous materials licenses and renewals. It names the Transportation Security Administration as the agency that investigates the driver's criminal history and immigration status and determines whether the driver poses a security risk. Another section also says you must pass a TSA background check to get the hazardous materials endorsement.
2. If involved in a crash, basic procedures should include all of the following, except:
- Protecting the area.
- Notifying the proper authorities.
- Caring for the injured.
- Driving away without stopping. ✓
Answer: D. Driving away without stopping.
3. To lower the risk of a rollover, you should:
- Load the cargo as far forward as possible.
- Load the cargo as far back as possible.
- Load the cargo as low as possible. ✓
- Stack the cargo as high as possible.
Answer: C. Load the cargo as low as possible.
Load the cargo as low as possible. The handbook says piling cargo higher moves the center of gravity up and makes a truck easier to turn over. To prevent rollover, it tells you to keep cargo close to the ground and to drive slowly around turns. Section 3 adds that a high center of gravity is most dangerous in curves or when swerving, and says to distribute cargo as low as possible, with the heaviest parts under the lightest parts. Loading low therefore directly reduces the rollover risk described in the passages.
4. A material’s hazard class reflects:
- The risks associated with the material. ✓
- The amount of packaging required to make the shipment.
- The location on the trailer where items may be placed.
- How the material should be loaded and unloaded.
Answer: A. The risks associated with the material.
A material's hazard class reflects the risks associated with that material. The handbook says plainly that a material's hazard class reflects the risks associated with it, and that there are nine different hazard classes, with the materials in each class listed in a table. So the class is a summary of the danger the material presents, not a statement about packaging or handling. The manual treats packaging and loading instructions as separate containment rules that tell shippers how to package safely and drivers how to load, transport, and unload, which is a different subject from the class itself.
5. When driving a vehicle with empty cargo tanks that are used to carry hazardous materials, the driver:
- Can cross railroad tracks without slowing or stopping.
- Needs to slow when approaching railroad tracks, but is not required to stop.
- Must stop at railroad crossings before proceeding. ✓
- Should never drive over railroad tracks.
Answer: C. Must stop at railroad crossings before proceeding.
You must stop at railroad crossings before proceeding when driving a vehicle with empty cargo tanks used for hazardous materials. The handbook's hazardous materials section says a driver must stop before a railroad crossing when the vehicle has cargo tanks, loaded or empty, used for hazardous materials. It also says to stop 15 to 50 feet back from the closest rail, cross only when you are sure no train is coming and you can clear the tracks without stopping, and not shift gears while crossing. That makes stopping before proceeding the required action for these empty tanks.
6. During a static leakage test, what is the maximum leakage rate that is safe for a double combination vehicle?
- 3 psi in one minute. ✓
- 6 psi in one minute.
- 8 psi in one minute.
Answer: A. 3 psi in one minute.
The highest safe leakage rate for a double combination vehicle is 3 psi in one minute. The air brake section describes the static leakage test this way: get the system fully charged, shut the engine off, release the parking brake, and watch how fast the gauge falls. For combination vehicles the loss must stay under three psi in one minute; single vehicles are held to two psi. So among the choices offered, three psi per minute is the largest drop that still passes. The handbook adds that if the loss is greater than the allowed amount, you should locate the leaks and repair them before driving.
7. Which of the following may result in an applicant being denied a hazardous materials endorsement?
- They are not a lawful permanent resident of the United States. ✓
- They have had a speeding conviction within the previous three years.
- They did not correctly answer every question on the written hazardous materials endorsement test.
- They did not pass the written hazardous materials endorsement test on the first attempt.
Answer: A. They are not a lawful permanent resident of the United States.
An applicant may be denied a hazardous materials endorsement if they are not a lawful permanent resident of the United States. The handbook says you will be denied or lose a hazardous materials endorsement if you are not a lawful permanent resident of the United States. It also lists other security-related grounds, such as renouncing citizenship, being wanted or under indictment for certain felonies, certain felony convictions, being adjudicated as lacking mental capacity, or being considered a security threat. The passage does not list a speeding conviction or written-test scoring as denial grounds for this endorsement.
8. A placard indicating hazardous materials is shaped like a:
- Diamond. ✓
- Triangle.
- Circle.
Answer: A. Diamond.
A placard indicating hazardous materials is shaped like a diamond. The handbook says vehicles carrying certain hazardous materials must display warning signs called placards, and it describes those placards as diamond-shaped, square on point. The package-label passage also says hazard warning labels are diamond-shaped, so the diamond shape is the one tied to hazardous material warnings. That supports choosing diamond for the placard shape.
9. Class 1, Class 2.1, and Class 3 items should not be placed in a trailer with:
- A heater. ✓
- An air conditioner.
- Other items.
- Batteries.
Answer: A. A heater.
Class 1, Class 2.1, and Class 3 items should not be placed in a trailer with a heater. The handbook gives special cargo heater rules for loading hazardous materials. It says the rules usually forbid cargo heaters, including automatic heater/air conditioner units. Unless you have read all the related rules, you should not load the listed products in a cargo space that has a heater. The passage also lists Class 2.1 flammable gas and Class 3 flammable liquids in the same hazardous materials discussion, so the heater is the item to keep away from these classes.
10. Drivers should try to stop ____ away from students at a bus stop.
- About 100 feet
- At least 50 feet
- At least 10 feet ✓
- Less than 10 feet
Answer: C. At least 10 feet
Stop at least 10 feet away from students at a bus stop. The Texas CDL handbook says to bring the bus to a full stop with the front bumper at least 10 feet from students at the designated stop. It explains that this gap makes students walk to the bus, which gives you a better view of their movements. So the distance to aim for is at least 10 feet, not a closer stop.
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Last checked: 2026-10-17 · Not yet verified
Updated: · Based on the official driver handbook