Delaware Hazardous Materials CDL Practice Test
Below are 25 exam-style questions for the Delaware Hazardous Materials CDL knowledge test, modeled on the FMCSA-aligned content used by the Delaware Division of Motor Vehicles. Try to answer each question on your own before reading the answer key directly under it. The questions and answer choices are shuffled deterministically per state and endorsement, so the order will stay the same on repeat visits — that lets you genuinely measure your improvement.
- A A proper shipping name, hazard class, and identification number
- B Only the price
- C Only the shipper's name
- D Driver's license number
- A A Hazmat (H) endorsement on their CDL
- B No special endorsement
- C A separate license
- D A medical card only
- A Driver's name
- B Color of packaging
- C Proper shipping name, hazard class, ID number, and required emergency information
- D Price only
- A No special handling
- B Special handling, additional documentation, and route planning
- C Vehicle escort
- D Only a special placard at night
- A All of the above
- B Routes prohibited for hazmat
- C Driving over a railroad-highway grade crossing without stopping (most placarded loads)
- D Tunnels marked as prohibited for hazmat
- A In a designated truck stop
- B In any rest area
- C On a public street within 5 feet of the road
- D Within 300 feet of a tunnel, bridge, or building used by the public, except for short rest stops
- A A separate trailer license
- B A medical card upgrade
- C A pilot car
- D X (combination of H and N for tank vehicles carrying hazardous materials)
- A Refuse the load and notify the carrier — the shipper must use a proper shipping name
- B Skip the placards
- C Use a generic placard
- D Use the closest entry
- A Engine must be off
- B No smoking within 25 feet
- C All of the above
- D The driver must be at the fueling control
- A Open the container to inspect
- B Drive to the destination quickly
- C Continue and report at the next stop
- D Stop, isolate the area, notify emergency services and the carrier
- A 50 feet
- B 10 feet
- C 100 feet
- D 25 feet
- A The train's crew
- B The train's schedule
- C The number of cars
- D A document describing all hazardous materials being carried
- A Four (one on each side and one on each end)
- B One
- C Six
- D Two
- A A placard for state-only highways
- B A placard for a small load only
- C A placard for the trailer interior
- D A placard for an additional hazard the material poses besides the primary hazard
- A Any 24-hour gas station
- B A motel near the route
- C A weigh station
- D An area approved by federal, state, or local authorities for parking unattended hazmat vehicles
- A Carried in the trailer
- B Only required for explosives
- C Mailed to the receiver
- D Carried in the cab and used by responders to look up immediate response information for hazmat
- A Hand off the unloading to the receiver
- B Stay within 25 feet of the vehicle and have a clear view of it
- C Disconnect the bonding wire first
- D Leave the truck and return when finished
- A Inspected once a year only
- B Bonded and grounded during loading and unloading
- C Loaded only at night
- D Loaded only by the receiver
- A Notify the carrier immediately
- B All of the above
- C Provide the responding officers with the shipping papers and ERG
- D Notify the National Response Center if the load is leaking or hazmat-related
- A Marked with the proper shipping name, ID number, and required labels
- B Made of glass only
- C Painted any color
- D Stored only at night
- A Have written instructions on what to do in case of accident or delay
- B Avoid Class A highways only
- C Drive only between 8 a.m. and 6 p.m.
- D Travel with a state escort
- A Only at the start of the trip
- B At each stop
- C Only at the destination
- D When the brakes feel different
- A Notify the carrier of any incident
- B Renew the TSA assessment periodically
- C All of the above
- D Pass a TSA security threat assessment including fingerprinting
- A Annually only
- B When the tank is full
- C Before each trip and at every stop
- D Once per year by federal officials
- A Park near an open flame
- B Park near a fire
- C Park within 5 feet of a road
- D All of the above
Study tips for the Delaware Hazardous Materials exam
The Hazardous Materials portion of the Delaware CDL exam is graded out of the bank of questions the Delaware Division of Motor Vehicles draws from each year. While the exact bank is not published, every question is sourced from the Hazardous Materials chapter of the Delaware CDL handbook, which itself is derived from the FMCSA Model Commercial Driver's License Manual. That means studying our practice tests, reading the corresponding handbook chapter, and re-reading the parts you got wrong is genuinely the most efficient route to a first-time pass.
Most successful applicants follow a simple cycle: take the practice test cold, write down every question you missed, open the matching chapter of the official Delaware handbook, re-read the section that contains the right answer, then re-take the practice test 24 to 48 hours later. The 24-hour delay matters — sleep is when your brain commits new information to long-term memory, and CDL knowledge questions reward that kind of consolidated learning rather than cramming.
Pay particular attention to questions that include qualifier words like always, never, only, primary, or most. CDL test writers love to flip the right answer with a single qualifier. When two answer choices look almost identical, pay attention to the verb (is it must, should, or may?) and to any numbers (14 days, 100 air miles, 8 hours, 70/8 split). On endorsement tests in particular, watch for trick framing where a true statement about a different endorsement is offered as the "correct" answer to a question that is actually about Hazardous Materials.
Test-day logistics matter too. Bring photo ID, your Social Security card or birth certificate, your medical examiner's certificate (DOT card), and proof of state residency if you haven't already submitted those documents. The Delaware Division of Motor Vehicles will not let you sit for the knowledge exam without your documentation, and most offices charge an additional fee for re-attempts. Arrive early — the wait at most CDL testing offices runs 30 to 60 minutes — and silence your phone before the exam begins.
Finally, keep your General Knowledge fundamentals sharp even when you're focused on the Hazardous Materials exam. Many states administer multiple knowledge tests in a single sitting, and questions on weight definitions (GVWR, GCWR, GAWR), stopping distance, and the pre-trip inspection routine show up across endorsements. If you're unsure on the basics, sit a fresh Delaware General Knowledge practice test before scheduling the real exam.
Next steps
Missed more than four questions? Re-read the Hazardous Materials study guide and the matching chapter in the official Delaware CDL handbook. Then come back and re-take the test. Once you can score 22 of 25 or higher on three runs in a row, you're in good shape to schedule the real exam at your local Delaware Division of Motor Vehicles office.
Already comfortable with this endorsement? Drill another: DE General Knowledge · DE Air Brakes · DE Combination Vehicles · DE Passenger · DE School Bus · DE Tank Vehicle · DE Doubles / Triples
New to the CDL process in Delaware? Read How to apply for a CDL in Delaware for the document checklist and step-by-step timeline.