North Carolina Hazardous Materials CDL Practice Test
Below are 25 exam-style questions for the North Carolina Hazardous Materials CDL knowledge test, modeled on the FMCSA-aligned content used by the North Carolina 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 Provide the responding officers with the shipping papers and ERG
- B Notify the carrier immediately
- C Notify the National Response Center if the load is leaking or hazmat-related
- D All of the above
- A Only liquids in port areas
- B Bulk shipments
- C Hazardous waste only
- D Cargo that may be harmful to aquatic life and requires special marking
- A Only on long trips
- B No — mix them in with other paperwork
- C Yes — they should be readily identifiable for emergency responders
- D Only if the receiver requests it
- A Bonded and grounded during loading and unloading
- B Loaded only at night
- C Loaded only by the receiver
- D Inspected once a year only
- A At 50 and 100 feet
- B Only at night
- C Within 10 feet only
- D At 10, 100, and 200 feet from the vehicle
- A All of the above
- B Renew the TSA assessment periodically
- C Notify the carrier of any incident
- D Pass a TSA security threat assessment including fingerprinting
- A Only liquids
- B Any quantity of any hazardous material
- C Bulk quantities or any amount of certain Table 1 materials
- D Only at night
- A Only at the start of the trip
- B Only at the destination
- C At each stop
- D When the brakes feel different
- A Truck designed for the specific class
- B Vehicle in compliance with HMR
- C Properly placarded trailer
- D Vehicle without working brake lights or in unsafe condition
- A A weigh station
- B An area approved by federal, state, or local authorities for parking unattended hazmat vehicles
- C A motel near the route
- D Any 24-hour gas station
- A Provide tax revenue
- B Communicate the risk, contain the materials, and protect the public
- C Help drivers move faster
- D Reduce fuel use
- A No smoking within 25 feet
- B All of the above
- C Engine must be off
- D The driver must be at the fueling control
- A Use a generic placard
- B Use the closest entry
- C Refuse the load and notify the carrier — the shipper must use a proper shipping name
- D Skip the placards
- A Travel with a state escort
- B Avoid Class A highways only
- C Drive only between 8 a.m. and 6 p.m.
- D Have written instructions on what to do in case of accident or delay
- 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 Color of packaging
- B Price only
- C Driver's name
- D Proper shipping name, hazard class, ID number, and required emergency information
- A Never
- B Two or more separate placards on a load that contains different hazard classes (Table 2 materials only)
- C Any single placard
- D Only on Class 1 explosives
- A Cover the explosives with the liquids
- B Always keep them together
- C Check the segregation table — many combinations are forbidden
- D Load them in the same compartment
- A No special handling
- B Vehicle escort
- C Only a special placard at night
- D Special handling, additional documentation, and route planning
- A Contain the spill
- B Protect yourself and isolate the area
- C Call your dispatcher only
- D Check the load for leaks first
- A Trust the shipper without checking
- B Only sign and drive
- C Verify markings, labels, placards, papers, and securement before signing for it
- D Wait for an inspector
- A A pallet
- B Cardboard boxes only
- C One that has more than 119 gallons capacity (liquids) or more than 882 lbs (solids)
- D Any package over 1 lb
- A All of the above
- B Federal rules (tunnels, bridges)
- C Carrier preference
- D State and local routing
- A Be attended by the driver
- B Have a flashing light on
- C Be in a low gear
- D Be locked
- A Park near a fire
- B Park within 5 feet of a road
- C Park near an open flame
- D All of the above
Study tips for the North Carolina Hazardous Materials exam
The Hazardous Materials portion of the North Carolina CDL exam is graded out of the bank of questions the North Carolina 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 North Carolina 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 North Carolina 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 North Carolina 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 North Carolina 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 North Carolina 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 North Carolina Division of Motor Vehicles office.
Already comfortable with this endorsement? Drill another: NC General Knowledge · NC Air Brakes · NC Combination Vehicles · NC Passenger · NC School Bus · NC Tank Vehicle · NC Doubles / Triples
New to the CDL process in North Carolina? Read How to apply for a CDL in North Carolina for the document checklist and step-by-step timeline.