Louisiana Hazardous Materials CDL Practice Test
Below are 25 exam-style questions for the Louisiana Hazardous Materials CDL knowledge test, modeled on the FMCSA-aligned content used by the Louisiana Office 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 Bulk quantities or any amount of certain Table 1 materials
- B Any quantity of any hazardous material
- C Only at night
- D Only liquids
- A Bulk shipments
- B Cargo that may be harmful to aquatic life and requires special marking
- C Only liquids in port areas
- D Hazardous waste only
- A Only on long trips
- B No — mix them in with other paperwork
- C Only if the receiver requests it
- D Yes — they should be readily identifiable for emergency responders
- A Take a break first
- B Drive to the destination immediately
- C Allow shipper to drive away
- D Verify shipping papers, placards, and securement before leaving the loading site
- A Bonded and grounded during loading and unloading
- B Loaded only by the receiver
- C Loaded only at night
- D Inspected once a year only
- A A logbook
- B A medical card
- C An expired permit or shipper certification missing
- D Cargo securement straps
- A Any single placard
- B Only on Class 1 explosives
- C Never
- D Two or more separate placards on a load that contains different hazard classes (Table 2 materials only)
- A Be attended by the driver
- B Be in a low gear
- C Be locked
- D Have a flashing light on
- A A separate trailer license
- B A pilot car
- C X (combination of H and N for tank vehicles carrying hazardous materials)
- D A medical card upgrade
- A Stop, isolate the area, notify emergency services and the carrier
- B Open the container to inspect
- C Drive to the destination quickly
- D Continue and report at the next stop
- A Communicate the risk, contain the materials, and protect the public
- B Reduce fuel use
- C Provide tax revenue
- D Help drivers move faster
- A The receiver
- B The carrier and the driver
- C The shipper
- D The state DMV
- A Move and obstruct visibility
- B Cause a leak or spill if the package is damaged
- C All of the above
- D Strike emergency exits
- A Annually only
- B Before each trip and at every stop
- C Once per year by federal officials
- D When the tank is full
- A Within reach of the driver while seated and within reach when the driver is out of the cab
- B Mailed to the destination
- C Stored in the trailer
- D Filed in the cab's glove box
- A UN or NA followed by four digits
- B A state two-letter code
- C A serial number
- D A barcode only
- 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 The carrier has insurance
- B The receiver has paid
- C The driver has training
- D The shipper guarantees the load is properly classified, packaged, marked, labeled, and described per regulations
- 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 All of the above
- B Heavily populated areas where possible
- C Routes specifically prohibited by state or local rules
- D Tunnels not authorized for explosives
- A Twelve
- B Nine
- C Five
- D Seven
- A Vehicles whose driver and equipment meet all federal safety requirements
- B Pickups only
- C Any vehicle
- D Vehicles older than 5 years
- A Try to put it out with water
- B Stay upwind, evacuate the area, and let trained responders handle it
- C Open the cargo doors to ventilate
- D Drive the vehicle to a safe place
- A Within 10 feet only
- B Only at night
- C At 50 and 100 feet
- D At 10, 100, and 200 feet from the vehicle
- 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
Study tips for the Louisiana Hazardous Materials exam
The Hazardous Materials portion of the Louisiana CDL exam is graded out of the bank of questions the Louisiana Office 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 Louisiana 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 Louisiana 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 Louisiana Office 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 Louisiana 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 Louisiana 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 Louisiana Office of Motor Vehicles office.
Already comfortable with this endorsement? Drill another: LA General Knowledge · LA Air Brakes · LA Combination Vehicles · LA Passenger · LA School Bus · LA Tank Vehicle · LA Doubles / Triples
New to the CDL process in Louisiana? Read How to apply for a CDL in Louisiana for the document checklist and step-by-step timeline.