Wyoming Hazardous Materials CDL Practice Test
Below are 25 exam-style questions for the Wyoming Hazardous Materials CDL knowledge test, modeled on the FMCSA-aligned content used by the Wyoming 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 A placard for an additional hazard the material poses besides the primary hazard
- B A placard for state-only highways
- C A placard for the trailer interior
- D A placard for a small load only
- A Take a break first
- B Drive to the destination immediately
- C Verify shipping papers, placards, and securement before leaving the loading site
- D Allow shipper to drive away
- A Inspected once a year only
- B Loaded only by the receiver
- C Loaded only at night
- D Bonded and grounded during loading and unloading
- A They can shift freely
- B Cargo cannot shift, leak, or be exposed to ignition sources
- C Cargo blocks emergency exits
- D Containers can rub against each other
- A Avoid Class A highways only
- 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 Travel with a state escort
- A Refer to the ERG
- B All of the above
- C Contact the carrier safety officer
- D Refer to 49 CFR Parts 100-185 (HMR)
- A Seven
- B Twelve
- C Five
- D Nine
- A Verify markings, labels, placards, papers, and securement before signing for it
- B Trust the shipper without checking
- C Wait for an inspector
- D Only sign and drive
- A Class 1 explosives, to determine which can be loaded together
- B Drivers, not cargo
- C All hazmat materials
- D Cargo tank vehicles only
- A A motel near the route
- B A weigh station
- C Any 24-hour gas station
- D An area approved by federal, state, or local authorities for parking unattended hazmat vehicles
- A Stop, isolate the area, notify emergency services and the carrier
- B Continue and report at the next stop
- C Open the container to inspect
- D Drive to the destination quickly
- A 10 feet
- B 25 feet
- C 100 feet
- D 50 feet
- A Once a week
- B Never; tires are the carrier's responsibility
- C Only at the start and end
- D At the start of each trip and each time they stop
- A Vehicle in compliance with HMR
- B Truck designed for the specific class
- C Properly placarded trailer
- D Vehicle without working brake lights or in unsafe condition
- A On a public street within 5 feet of the road
- B Within 300 feet of a tunnel, bridge, or building used by the public, except for short rest stops
- C In any rest area
- D In a designated truck stop
- A Continue and report later
- B Drive faster to compensate
- C Stop and notify the carrier and shipper before continuing
- D Hide the error
- A Marked with the proper shipping name, ID number, and required labels
- B Painted any color
- C Made of glass only
- D Stored only at night
- A Strike emergency exits
- B Move and obstruct visibility
- C All of the above
- D Cause a leak or spill if the package is damaged
- A Provide tax revenue
- B Communicate the risk, contain the materials, and protect the public
- C Reduce fuel use
- D Help drivers move faster
- A Only on Class 1 explosives
- B Any single placard
- C Two or more separate placards on a load that contains different hazard classes (Table 2 materials only)
- D Never
- A Special handling, additional documentation, and route planning
- B Vehicle escort
- C Only a special placard at night
- D No special handling
- A All of the above
- B Park near a fire
- C Park within 5 feet of a road
- D Park near an open flame
- A Only at the destination
- B Only at the start of the trip
- C At each stop
- D When the brakes feel different
- A A barcode only
- B A serial number
- C A state two-letter code
- D UN or NA followed by four digits
- A A document describing all hazardous materials being carried
- B The train's crew
- C The number of cars
- D The train's schedule
Study tips for the Wyoming Hazardous Materials exam
The Hazardous Materials portion of the Wyoming CDL exam is graded out of the bank of questions the Wyoming 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 Wyoming 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 Wyoming 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 Wyoming 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 Wyoming 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 Wyoming 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 Wyoming Department of Transportation office.
Already comfortable with this endorsement? Drill another: WY General Knowledge · WY Air Brakes · WY Combination Vehicles · WY Passenger · WY School Bus · WY Tank Vehicle · WY Doubles / Triples
New to the CDL process in Wyoming? Read How to apply for a CDL in Wyoming for the document checklist and step-by-step timeline.