Not affiliated with any state DMV or AAMVA. Original questions based on the Texas Commercial Motor Vehicle Drivers Handbook (DL-7C, revised March 2026).
CDL hazmat test: practice test with original questions from a state CDL handbook
Practice for the CDL hazardous materials (hazmat) endorsement knowledge test with 71 original questions written from a state CDL handbook based on the national model manual (Texas DL-7C, revised March 2026), in English and Spanish.
71 questions · Modes: Study, Topic drill, Daily 5
About this test
Practice for the CDL hazardous materials (hazmat) endorsement knowledge test with original questions written from the hazardous materials section of the Texas Commercial Motor Vehicle Drivers Handbook (DL-7C, revised March 2026), which follows the national AAMVA model CDL manual used by most states. Every correct answer is backed by a passage of the handbook and checked by two independent verifiers.
- Study: every question with a short explanation.
- Topic drills: purpose of the rules and who does what, shipping papers, labels and placards, loading and unloading, bulk packaging, driving, parking and emergencies.
- Mock test: not offered, because the handbook states the 80% pass mark but not the number of questions.
The questions are written in our own words in English and Spanish; this is not any state's question bank. Table lookups (such as the hazardous materials table and segregation chart) are not included. The federal security threat assessment for the endorsement is separate.
Topics
- Accepting certification · 1
- Attending parked vehicle · 1
- Basic description order · 1
- Bracing · 1
- Bulk packaging size · 1
- Cargo heaters · 1
- Cargo tanks · 1
- Carrier record retention · 1
- CHEMTREC · 1
- Chlorine equipment · 1
- Class 4 and 5 enclosure · 1
- Closing manholes · 1
- Communicating risk · 1
- Compressed gas unhooking · 1
- Containment rules · 1
- Crossing the tracks · 1
- Damaged explosives · 1
- Dangerous placard · 1
- Driver duties · 1
- Emergency phone number · 1
- Emergency response information location · 1
- Emptying cargo tank · 1
- Explosives after collision · 1
- Explosives engine off · 1
- Explosives parking distance · 1
- Fire extinguisher · 1
- Flammable liquid engine · 1
- Grounding · 1
- Hazardous waste manifest · 1
- Heat sources · 1
- Hooks · 1
- Hot trailer doors · 1
- Identification numbers · 1
- Inhalation hazard placards · 1
- Keeping dry · 1
- Leaking vehicles · 1
- Moving without placards · 1
- Nitric acid · 1
- Non-hazardous descriptions · 1
- Number of placards · 1
- Opening packages · 1
- Open valves · 1
- Papers when out of vehicle · 1
- Papers while driving · 1
- Parking brake · 1
- Penalties · 1
- Poison in cab · 1
- Portable tanks · 1
- Radioactive leaks · 1
- Railroad crossing distance · 1
- Refueling · 1
- Residue placarding · 1
- Route plan · 1
- RQ marking · 1
- Security training · 1
- Shipper record retention · 1
- Slogans on placards · 1
- Special training · 1
- Stopped vehicle signals · 1
- Table 1 placards · 1
- Table 2 threshold · 1
- Tank attendant · 1
- Tire checks · 1
- Training frequency · 1
- Training records · 1
- Transferring explosives · 1
- Transferring flammable gas · 1
- Transport index · 1
- Waste on shipping paper · 1
- Who trains drivers · 1
- Written incident reports · 1
Sources and version
- Texas Commercial Motor Vehicle Drivers Handbook (DL-7C)Covers: Revised March 2026
Covers: Texas DL-7C, revised March 2026 · Verified current as of Oct 28, 2026
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How this page was made
Written by AI from the sources listed above, checked automatically, not reviewed by a person. Where the source licence allows it the questions keep the source wording; otherwise they are original questions based on the source. Every answer shows its source. This is not legal, immigration, medical or financial advice.