New Hampshire Hazardous Materials CDL Practice Test
Below are 25 exam-style questions for the New Hampshire Hazardous Materials CDL knowledge test, modeled on the FMCSA-aligned content used by the New Hampshire 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 No smoking within 25 feet
- B Engine must be off
- C All of the above
- D The driver must be at the fueling control
- A The carrier and the driver
- B The state DMV
- C The shipper
- D The receiver
- A At 50 and 100 feet
- B Only at night
- C At 10, 100, and 200 feet from the vehicle
- D Within 10 feet only
- A Only a special placard at night
- B Special handling, additional documentation, and route planning
- C Vehicle escort
- D No special handling
- A In any rest area
- B Within 300 feet of a tunnel, bridge, or building used by the public, except for short rest stops
- C In a designated truck stop
- D On a public street within 5 feet of the road
- A When the brakes feel different
- B Only at the start of the trip
- C At each stop
- D Only at the destination
- A Have current TSA security threat assessment
- B Carry shipping papers and ERG
- C All of the above
- D Have current hazmat training
- A All of the above
- B During the trip if you stop
- C In an emergency
- D Before leaving the loading site
- A Cargo securement straps
- B A medical card
- C An expired permit or shipper certification missing
- D A logbook
- A Vehicles whose driver and equipment meet all federal safety requirements
- B Any vehicle
- C Vehicles older than 5 years
- D Pickups only
- A Cardboard boxes only
- B One that has more than 119 gallons capacity (liquids) or more than 882 lbs (solids)
- C A pallet
- D Any package over 1 lb
- A Refer to the ERG
- B All of the above
- C Refer to 49 CFR Parts 100-185 (HMR)
- D Contact the carrier safety officer
- A Stop and notify the carrier and shipper before continuing
- B Drive faster to compensate
- C Continue and report later
- D Hide the error
- A A state two-letter code
- B A serial number
- C UN or NA followed by four digits
- D A barcode only
- A Strike emergency exits
- B Move and obstruct visibility
- C Cause a leak or spill if the package is damaged
- D All of the above
- A Seven
- B Five
- C Nine
- D Twelve
- A When the tank is full
- B Once per year by federal officials
- C Annually only
- D Before each trip and at every stop
- A Cover the explosives with the liquids
- B Load them in the same compartment
- C Check the segregation table — many combinations are forbidden
- D Always keep them together
- A Allow shipper to drive away
- B Take a break first
- C Verify shipping papers, placards, and securement before leaving the loading site
- D Drive to the destination immediately
- A Trust the shipper without checking
- B Verify markings, labels, placards, papers, and securement before signing for it
- C Wait for an inspector
- D Only sign and drive
- A Notify the National Response Center if the load is leaking or hazmat-related
- B Provide the responding officers with the shipping papers and ERG
- C Notify the carrier immediately
- D All of the above
- A Any 24-hour gas station
- B An area approved by federal, state, or local authorities for parking unattended hazmat vehicles
- C A motel near the route
- D A weigh station
- A Properly placarded trailer
- B Vehicle in compliance with HMR
- C Truck designed for the specific class
- D Vehicle without working brake lights or in unsafe condition
- A All of the above
- B Notify the carrier of any incident
- C Pass a TSA security threat assessment including fingerprinting
- D Renew the TSA assessment periodically
- A Tunnels marked as prohibited for hazmat
- B All of the above
- C Routes prohibited for hazmat
- D Driving over a railroad-highway grade crossing without stopping (most placarded loads)
Study tips for the New Hampshire Hazardous Materials exam
The Hazardous Materials portion of the New Hampshire CDL exam is graded out of the bank of questions the New Hampshire 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 New Hampshire 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 New Hampshire 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 New Hampshire 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 New Hampshire 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 New Hampshire 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 New Hampshire Division of Motor Vehicles office.
Already comfortable with this endorsement? Drill another: NH General Knowledge · NH Air Brakes · NH Combination Vehicles · NH Passenger · NH School Bus · NH Tank Vehicle · NH Doubles / Triples
New to the CDL process in New Hampshire? Read How to apply for a CDL in New Hampshire for the document checklist and step-by-step timeline.