Nebraska Hazardous Materials CDL Practice Test
Below are 25 exam-style questions for the Nebraska Hazardous Materials CDL knowledge test, modeled on the FMCSA-aligned content used by the Nebraska Department 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 Travel with a state escort
- B Drive only between 8 a.m. and 6 p.m.
- C Have written instructions on what to do in case of accident or delay
- D Avoid Class A highways only
- A Containers can rub against each other
- B Cargo cannot shift, leak, or be exposed to ignition sources
- C Cargo blocks emergency exits
- D They can shift freely
- A Once a week
- B Only at the start and end
- C Never; tires are the carrier's responsibility
- D At the start of each trip and each time they stop
- A The receiver has paid
- B The shipper guarantees the load is properly classified, packaged, marked, labeled, and described per regulations
- C The driver has training
- D The carrier has insurance
- A All of the above
- B Pass a TSA security threat assessment including fingerprinting
- C Renew the TSA assessment periodically
- D Notify the carrier of any incident
- A Cause a leak or spill if the package is damaged
- B All of the above
- C Strike emergency exits
- D Move and obstruct visibility
- A Allow shipper to drive away
- B Take a break first
- C Drive to the destination immediately
- D Verify shipping papers, placards, and securement before leaving the loading site
- A All of the above
- B No smoking within 25 feet
- C The driver must be at the fueling control
- D Engine must be off
- A Only at night
- B Within 10 feet only
- C At 50 and 100 feet
- D At 10, 100, and 200 feet from the vehicle
- A Park near an open flame
- B All of the above
- C Park near a fire
- D Park within 5 feet of a road
- A Contact the carrier safety officer
- B Refer to the ERG
- C Refer to 49 CFR Parts 100-185 (HMR)
- D All of the above
- A Vehicles older than 5 years
- B Vehicles whose driver and equipment meet all federal safety requirements
- C Any vehicle
- D Pickups only
- A Stored in the trailer
- B Filed in the cab's glove box
- C Mailed to the destination
- D Within reach of the driver while seated and within reach when the driver is out of the cab
- A A placard for the trailer interior
- B A placard for an additional hazard the material poses besides the primary hazard
- C A placard for a small load only
- D A placard for state-only highways
- A The shipper
- B The state DMV
- C The carrier and the driver
- D The receiver
- A Annually only
- B When the tank is full
- C Once per year by federal officials
- D Before each trip and at every stop
- A Call your dispatcher only
- B Protect yourself and isolate the area
- C Contain the spill
- D Check the load for leaks first
- A A medical card only
- B A separate license
- C A Hazmat (H) endorsement on their CDL
- D No special endorsement
- A Hide the error
- B Continue and report later
- C Stop and notify the carrier and shipper before continuing
- D Drive faster to compensate
- A Notify the carrier immediately
- B All of the above
- C Notify the National Response Center if the load is leaking or hazmat-related
- D Provide the responding officers with the shipping papers and ERG
- A A document describing all hazardous materials being carried
- B The train's schedule
- C The number of cars
- D The train's crew
- A Load them in the same compartment
- B Cover the explosives with the liquids
- C Always keep them together
- D Check the segregation table — many combinations are forbidden
- A Wait for an inspector
- B Only sign and drive
- C Trust the shipper without checking
- D Verify markings, labels, placards, papers, and securement before signing for it
- A A medical card upgrade
- B A pilot car
- C A separate trailer license
- D X (combination of H and N for tank vehicles carrying hazardous materials)
- A Two or more separate placards on a load that contains different hazard classes (Table 2 materials only)
- B Any single placard
- C Never
- D Only on Class 1 explosives
Study tips for the Nebraska Hazardous Materials exam
The Hazardous Materials portion of the Nebraska CDL exam is graded out of the bank of questions the Nebraska Department 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 Nebraska 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 Nebraska 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 Nebraska Department 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 Nebraska 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 Nebraska 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 Nebraska Department of Motor Vehicles office.
Already comfortable with this endorsement? Drill another: NE General Knowledge · NE Air Brakes · NE Combination Vehicles · NE Passenger · NE School Bus · NE Tank Vehicle · NE Doubles / Triples
New to the CDL process in Nebraska? Read How to apply for a CDL in Nebraska for the document checklist and step-by-step timeline.