Know the shipment, the hazard, and your responsibilities.
Texas HazMat testing is grounded in federal hazardous-material transportation requirements. The Texas endorsement process also requires first-time H applicants to complete ELDT and requires TSA security-threat-assessment clearance before the endorsement can be issued.
01Shipping papers
02Placards
03Loading and segregation
04Emergencies
05TSA security assessment
06Texas H and X rules
PRACTICE MODE
Texas CDL HazMat Test
Question order and answer order shuffle on each attempt. Choose one answer, read the explanation, then use Back or Next to continue.
Question 1 of 25Score 0
Why are hazardous materials transportation rules necessary?
Answer: To protect people, property, and the environment
Hazardous materials can create serious health, safety, property, and environmental risks during transportation. Regulations establish communication, packaging, handling, and operating safeguards. Study: Texas CDL Handbook — Section 9: Hazardous Materials — purpose of regulations
Who is primarily responsible for correctly classifying a material before shipment?
Answer: The shipper
The shipper determines the material’s hazard classification, selects proper packaging, marks and labels it, and prepares the shipping paper. The driver must still inspect the shipment and reject unsafe or noncompliant loads. Study: Texas CDL Handbook — Section 9: Hazardous Materials — responsibilities
While driving, where may hazardous-material shipping papers be kept?
Answer: Within immediate reach and clearly visible, or in the driver-door pouch
Shipping papers must be readily available and recognizable to responders and inspectors. They may be kept in a driver-door pouch or in clear view within immediate reach while the seat belt is fastened. Study: Texas CDL Handbook — Section 9: Hazardous Materials — shipping papers
Why should hazardous-material shipping papers be distinctively tabbed or placed on top?
Answer: So authorities can find them quickly
Quick identification helps emergency responders understand the hazards involved in a crash, leak, or fire. Emergency-response information should be kept with the papers. Study: Texas CDL Handbook — Section 9: Hazardous Materials — shipping papers
What is a hazardous-material identification number?
Answer: A four-digit UN or NA number used to identify a material
First responders use four-digit identification numbers, commonly preceded by UN or NA, to look up response information. The same number may identify more than one closely related material. Study: Texas CDL Handbook — Section 9: Hazardous Materials — identification numbers
How many identical placards are generally required on a placarded vehicle?
Answer: At least four
Placards are normally displayed on the front, rear, and both sides so the hazard is visible from every direction. They must remain readable and securely attached. Study: Texas CDL Handbook — Section 9: Hazardous Materials — placard placement
At what aggregate gross weight do Table 2 materials generally require placarding?
Answer: 1,001 pounds or more
For most non-bulk Table 2 materials, placarding begins at an aggregate gross weight of 1,001 pounds. Exceptions and special rules mean drivers must use the current table. Study: Texas CDL Handbook — Section 9: Hazardous Materials — placarding
Which hazard class covers explosives?
Answer: Class 1
Class 1 covers explosives and is divided into divisions based on the type and severity of explosive hazard. Specific division placards and handling rules may apply. Study: Texas CDL Handbook — Section 9: Hazardous Materials — hazard classes
Which hazard class includes flammable solids and materials dangerous when wet?
Answer: Class 4
Class 4 includes flammable solids, spontaneously combustible materials, and dangerous-when-wet materials in separate divisions. Each division has distinct hazards. Study: Texas CDL Handbook — Section 9: Hazardous Materials — hazard classes
Which hazard class includes poisonous materials and infectious substances?
Answer: Class 6
Class 6 includes toxic materials and infectious substances in separate divisions. Avoid exposure and follow special packaging, segregation, and emergency rules. Study: Texas CDL Handbook — Section 9: Hazardous Materials — hazard classes
Which hazard class covers corrosive material?
Answer: Class 8
Class 8 materials can destroy tissue or severely corrode certain materials. Inspect packages carefully and keep incompatible cargo separated. Study: Texas CDL Handbook — Section 9: Hazardous Materials — hazard classes
What should a driver do with a leaking hazardous-material package?
Answer: Do not transport it; isolate and report it according to procedures
Leaks can expose people and create fire, reaction, or environmental hazards. Do not accept or move a leaking package except under authorized emergency direction. Study: Texas CDL Handbook — Section 9: Hazardous Materials — damaged packages
What is segregation in hazardous-material transportation?
Answer: Keeping incompatible materials apart
Some materials can react dangerously if mixed or if leakage allows contact. The segregation table and current regulations determine what may be loaded together. Study: Texas CDL Handbook — Section 9: Hazardous Materials — segregation
What should be done before moving a vehicle after loading a cargo tank?
Answer: Close all manholes and valves and check for leaks
Closures must be secure and the tank and piping leak-free before movement. Never drive with open valves or manhole covers. Study: Texas CDL Handbook — Section 9: Hazardous Materials — cargo tanks
What minimum fire-extinguisher rating is required on the power unit of a placarded vehicle?
Answer: 10 B:C or greater
The power unit of a placarded vehicle must carry a UL-rated extinguisher of at least 10 B:C. The driver must know its location and verify it is charged and secured. Study: Texas CDL Handbook — Section 9: Hazardous Materials — emergency equipment
What should a HazMat driver do about state and local route restrictions?
Answer: Check permits and restrictions before starting
HazMat routes and permit rules can change and may restrict tunnels, bridges, or populated areas. Plan and verify the route in advance. Study: Texas CDL Handbook — Section 9: Hazardous Materials — route planning
How far from the nearest rail should a placarded vehicle generally stop at a railroad crossing?
Answer: At least 15 feet but no more than 50 feet
Placarded vehicles generally stop 15 to 50 feet from the nearest rail, look and listen, and cross only when safe. Exceptions are defined in the rules. Study: Texas CDL Handbook — Section 9: Hazardous Materials — railroad crossings
What should a driver do after discovering a hazardous-material leak during transportation?
Answer: Secure the area, keep people away, and notify emergency authorities
Avoid contact and inhalation, move people upwind when possible, and provide responders with shipping papers and emergency information. Follow authorized emergency instructions. Study: Texas CDL Handbook — Section 9: Hazardous Materials — leaks
What information should be given to emergency responders after a HazMat incident?
Answer: Shipping papers, material identity, hazards, and emergency information
Accurate material and shipment information helps responders choose safe isolation, firefighting, and protective actions. Make the papers readily available. Study: Texas CDL Handbook — Section 9: Hazardous Materials — emergency communication
How close may a driver smoke to a placarded cargo tank carrying specified flammable liquid or gas?
Answer: Smoking is prohibited within 25 feet
Hazardous-material rules prohibit smoking within 25 feet of specified flammable cargo and loading areas. Ignition sources must be kept away from these hazards. Study: Texas CDL Handbook — Hazardous Materials
What training must a first-time Texas H endorsement applicant complete?
Answer: Hazardous Materials Entry-Level Driver Training
Texas DPS states that first-time H endorsement applicants must complete ELDT. The HazMat knowledge exam and TSA security threat assessment are separate parts of the process. Study: Texas DPS — Hazardous Materials Endorsement
Can an H hazardous-materials endorsement be placed on a Texas CLP?
Answer: No; H is a CDL-only endorsement
Texas lists H as a CDL-only endorsement. The only endorsements permitted on a CLP are P, S, and N. Study: Texas DPS — Endorsements and Restrictions
What must happen before Texas can issue a CDL with an H endorsement?
Answer: TSA must complete the security threat assessment and grant clearance
Texas cannot issue the H endorsement until TSA completes the required security threat assessment and reports approval. Study: Texas DPS — Hazardous Materials Endorsement
What does the X endorsement on a Texas CDL authorize?
Answer: The combination of hazardous-materials and tank-vehicle privileges
Texas uses X for the combined HazMat and tank-vehicle endorsement. The driver must satisfy the requirements for both H and N privileges. Study: Texas DPS — Endorsements and Restrictions
Which section of the Texas Commercial Motor Vehicle Drivers Handbook is the main study section for the HazMat exam?
Answer: Section 9 — Hazardous Materials
Texas DPS directs HazMat applicants to Section 9 of the Texas Commercial Motor Vehicle Drivers Handbook for endorsement-exam preparation. Federal hazardous-material transport rules remain the foundation of the material. Study: Texas DPS — Hazardous Materials Endorsement
Use practice to find the handbook sections you still need.
01
Answer without guessing from memory
Use the first attempt to expose weak knowledge instead of memorizing answer positions.
02
Read every explanation
When a rule is Texas-specific, confirm it in the current Texas DPS material linked below.
03
Retake after review
Aim for consistent mastery across both the Texas mixed test and every focused test your CDL goal requires.
COMMON QUESTIONS
HazMat practice test FAQ
Is this Texas HazMat practice test free?
Yes. The 25-question practice test, instant feedback, scoring, and answer explanations are available without registration.
Are these official Texas DPS exam questions?
No. They are original study questions written from Texas DPS and standard CDL handbook topics. The Texas DPS controls the real knowledge and skills examinations.
Should I still read the Texas Commercial Driver Handbook?
Yes. Use the current Texas Commercial Motor Vehicle Drivers Handbook and Texas DPS instructions as the final authority, especially for licensing steps, restrictions, medical rules, and state-specific procedures.
What score should I aim for while practicing?
Texas requires 80 percent or higher on each required CDL knowledge-exam section. For practice, aim to score comfortably above that and review every missed explanation.
FACT-CHECKED STUDY BASIS
Texas DPS and federal sources
These are original study questions, not copied licensing-exam questions. Texas DPS guidance and the current Texas Commercial Motor Vehicle Drivers Handbook control state procedures; federal standards apply where incorporated.
Important: CDL Test Practice is an independent study website and is not affiliated with Texas DPS or FMCSA. Rules and procedures can change; verify current official instructions before applying or testing.