Alabama Hazardous Materials CDL Practice Test
Below are 25 exam-style questions for the Alabama Hazardous Materials CDL knowledge test, modeled on the FMCSA-aligned content used by the Alabama Law Enforcement Agency (ALEA) Driver License Division. 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 A placard for an additional hazard the material poses besides the primary hazard
- B A placard for the trailer interior
- C A placard for a small load only
- D A placard for state-only highways
- A Travel with a state escort
- B Have written instructions on what to do in case of accident or delay
- C Avoid Class A highways only
- D Drive only between 8 a.m. and 6 p.m.
- A Hide the error
- B Drive faster to compensate
- C Continue and report later
- D Stop and notify the carrier and shipper before continuing
- A Annually only
- B When the tank is full
- C Before each trip and at every stop
- D Once per year by federal officials
- A One that has more than 119 gallons capacity (liquids) or more than 882 lbs (solids)
- B Any package over 1 lb
- C A pallet
- D Cardboard boxes only
- A All of the above
- B Tunnels marked as prohibited for hazmat
- C Driving over a railroad-highway grade crossing without stopping (most placarded loads)
- D Routes prohibited for hazmat
- 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 Color of packaging
- B Driver's name
- C Price only
- D Proper shipping name, hazard class, ID number, and required emergency information
- A Vehicle escort
- B No special handling
- C Only a special placard at night
- D Special handling, additional documentation, and route planning
- A Use the closest entry
- B Skip the placards
- C Refuse the load and notify the carrier — the shipper must use a proper shipping name
- D Use a generic placard
- A Any single placard
- B Never
- C Two or more separate placards on a load that contains different hazard classes (Table 2 materials only)
- D Only on Class 1 explosives
- A Provide the responding officers with the shipping papers and ERG
- B Notify the carrier immediately
- C All of the above
- D Notify the National Response Center if the load is leaking or hazmat-related
- A Inspected once a year only
- B Loaded only at night
- C Bonded and grounded during loading and unloading
- D Loaded only by the receiver
- A Only required for explosives
- B Carried in the cab and used by responders to look up immediate response information for hazmat
- C Mailed to the receiver
- D Carried in the trailer
- A Stay within 25 feet of the vehicle and have a clear view of it
- B Hand off the unloading to the receiver
- C Disconnect the bonding wire first
- D Leave the truck and return when finished
- A Before leaving the loading site
- B During the trip if you stop
- C All of the above
- D In an emergency
- A Avoid weigh stations
- B Have a written route plan if required by the shipper or by federal/state rules
- C Take the most direct route regardless of restrictions
- D Drive at night only
- A Heavily populated areas where possible
- B All of the above
- C Tunnels not authorized for explosives
- D Routes specifically prohibited by state or local rules
- A Be unloaded by the driver alone
- B Be driven to the destination
- C Be moved to a remote area immediately
- D Be left where it is, the area isolated, and the carrier and emergency services notified
- A Only liquids in port areas
- B Hazardous waste only
- C Bulk shipments
- D Cargo that may be harmful to aquatic life and requires special marking
- A Drive to the destination quickly
- B Stop, isolate the area, notify emergency services and the carrier
- C Continue and report at the next stop
- D Open the container to inspect
- A Truck designed for the specific class
- B Properly placarded trailer
- C Vehicle in compliance with HMR
- D Vehicle without working brake lights or in unsafe condition
- A Within 50 feet of the crossing
- B Between 15 and 50 feet from the nearest rail
- C Only at night
- D Only when a train is approaching
- A Filed in the cab's glove box
- B Mailed to the destination
- C Stored in the trailer
- D Within reach of the driver while seated and within reach when the driver is out of the cab
- A Provide tax revenue
- B Help drivers move faster
- C Communicate the risk, contain the materials, and protect the public
- D Reduce fuel use
Study tips for the Alabama Hazardous Materials exam
The Hazardous Materials portion of the Alabama CDL exam is graded out of the bank of questions the Alabama Law Enforcement Agency (ALEA) Driver License Division draws from each year. While the exact bank is not published, every question is sourced from the Hazardous Materials chapter of the Alabama 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 Alabama 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 Alabama Law Enforcement Agency (ALEA) Driver License Division 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 Alabama 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 Alabama 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 Alabama Law Enforcement Agency (ALEA) Driver License Division office.
Already comfortable with this endorsement? Drill another: AL General Knowledge · AL Air Brakes · AL Combination Vehicles · AL Passenger · AL School Bus · AL Tank Vehicle · AL Doubles / Triples
New to the CDL process in Alabama? Read How to apply for a CDL in Alabama for the document checklist and step-by-step timeline.