Hawaii Hazardous Materials CDL Practice Test
Below are 25 exam-style questions for the Hawaii Hazardous Materials CDL knowledge test, modeled on the FMCSA-aligned content used by the Hawaii Department of Transportation. 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 Driver's license number
- B Only the shipper's name
- C Only the price
- D A proper shipping name, hazard class, and identification number
- A Have written instructions on what to do in case of accident or delay
- B Drive only between 8 a.m. and 6 p.m.
- C Travel with a state escort
- D Avoid Class A highways only
- A A logbook
- B Cargo securement straps
- C An expired permit or shipper certification missing
- D A medical card
- A Six
- B One
- C Four (one on each side and one on each end)
- D Two
- A Drive faster to compensate
- B Hide the error
- C Stop and notify the carrier and shipper before continuing
- D Continue and report later
- A A state two-letter code
- B UN or NA followed by four digits
- C A serial number
- D A barcode only
- A Protect yourself and isolate the area
- B Check the load for leaks first
- C Call your dispatcher only
- D Contain the spill
- A Refuse the load and notify the carrier — the shipper must use a proper shipping name
- B Skip the placards
- C Use the closest entry
- D Use a generic placard
- A Inspected once a year only
- B Loaded only by the receiver
- C Bonded and grounded during loading and unloading
- D Loaded only at night
- A Notify the carrier of any incident
- B Pass a TSA security threat assessment including fingerprinting
- C Renew the TSA assessment periodically
- D All of the above
- A Any package over 1 lb
- B One that has more than 119 gallons capacity (liquids) or more than 882 lbs (solids)
- C A pallet
- D Cardboard boxes only
- A Leave the truck and return when finished
- B Stay within 25 feet of the vehicle and have a clear view of it
- C Disconnect the bonding wire first
- D Hand off the unloading to the receiver
- A Be driven to the destination
- B Be left where it is, the area isolated, and the carrier and emergency services notified
- C Be unloaded by the driver alone
- D Be moved to a remote area immediately
- A All of the above
- B Park near a fire
- C Park near an open flame
- D Park within 5 feet of a road
- A Between 15 and 50 feet from the nearest rail
- B Only at night
- C Within 50 feet of the crossing
- D Only when a train is approaching
- A Drive the vehicle to a safe place
- B Try to put it out with water
- C Stay upwind, evacuate the area, and let trained responders handle it
- D Open the cargo doors to ventilate
- 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 Contact the carrier safety officer
- B Refer to the ERG
- C All of the above
- D Refer to 49 CFR Parts 100-185 (HMR)
- 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 Within 300 feet of a tunnel, bridge, or building used by the public, except for short rest stops
- B In a designated truck stop
- C In any rest area
- D On a public street within 5 feet of the road
- A Only required for explosives
- B Carried in the trailer
- C Mailed to the receiver
- D Carried in the cab and used by responders to look up immediate response information for hazmat
- A 50 feet
- B 25 feet
- C 100 feet
- D 10 feet
- A All of the above
- B Carrier preference
- C State and local routing
- D Federal rules (tunnels, bridges)
- A The driver must be at the fueling control
- B No smoking within 25 feet
- C Engine must be off
- D All of the above
- A Pickups only
- B Vehicles whose driver and equipment meet all federal safety requirements
- C Any vehicle
- D Vehicles older than 5 years
Study tips for the Hawaii Hazardous Materials exam
The Hazardous Materials portion of the Hawaii CDL exam is graded out of the bank of questions the Hawaii Department of Transportation draws from each year. While the exact bank is not published, every question is sourced from the Hazardous Materials chapter of the Hawaii 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 Hawaii 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 Hawaii Department of Transportation 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 Hawaii 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 Hawaii 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 Hawaii Department of Transportation office.
Already comfortable with this endorsement? Drill another: HI General Knowledge · HI Air Brakes · HI Combination Vehicles · HI Passenger · HI School Bus · HI Tank Vehicle · HI Doubles / Triples
New to the CDL process in Hawaii? Read How to apply for a CDL in Hawaii for the document checklist and step-by-step timeline.