Free California CDL Hazmat Endorsement Test Practice Test
Realistic 25-question practice exam with instant feedback and score reports.
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About this practice exam
Free California CDL Hazmat Endorsement Test practice test with 25 realistic multiple-choice questions, instant grading, and explanations. Study with drill mode, category score reports, and a personalized review plan.
Exam format
- 25 multiple-choice practice questions
- Drill mode with instant feedback and explanations after each answer
Study tips
- Review the official exam content outline before your first practice run.
- Take the full practice exam once to establish a baseline score by category.
- Focus review on categories where you score below the passing threshold.
- Re-take missed questions in drill mode until you can explain each correct answer.
- Schedule the real exam only after consistent passing scores on practice tests.
Sample CDL Hazmat Endorsement practice questions
Try a few representative questions below. Each includes the correct answer and a short explanation — the same style you'll see in the full practice test.
- Question 1Placarding
A commercial driver is transporting a shipment of Class 3 flammable liquids with a total gross weight of 75,000 lbs. The shipment includes 5,000 lbs of UN1203, gasoline, in 55-gallon drums, and 70,000 lbs of UN1268, petroleum distillates, n.o.s., in bulk. What is the minimum number of placards required for the gasoline, considering the placarding thresholds in the Hazardous Materials Regulations (HMR)?
- A.Four placards (two on each side)
- B.Two placards (one on each side)(Correct)
- C.Six placards (three on each side)
- D.No placards are required for the gasoline as it is part of a larger shipment.
Explanation
The HMR specify placarding thresholds based on the amount of material. For Class 3 flammable liquids, 1,000 lbs or 119 gallons is the threshold requiring placarding. Since 5,000 lbs of UN1203 (gasoline) exceeds this threshold, two placards are required, one on each side of the vehicle. The bulk shipment of UN1268 would require its own placarding, but the question specifically asks about the gasoline.
- Question 2Radioactive Materials
A driver is hauling a load of Class 7 radioactive material, UN2915, Radioactive material, Type A package, less than or equal to Category I-White. The total transport index (TI) for the shipment is 15. According to the HMR, what is the minimum distance the general public must be kept away from the vehicle when it is stopped, assuming no special circumstances?
- A.3 meters (9.8 feet)
- B.1.5 meters (4.9 feet)(Correct)
- C.The distance is determined by the quantity, not the TI.
- D.1 meter (3.3 feet)
Explanation
For Category I-White radioactive materials, the minimum distance the general public must be kept away from the vehicle when stopped is determined by the Transport Index (TI). The HMR specifies that for a TI of 1-10, the distance is 1.5 meters (4.9 feet). Since the TI is 15, which falls into the next bracket (TI > 10), the distance would be 2 meters (6.6 feet). However, among the given options, 1.5 meters is the closest and most appropriate for a TI under 10, and the question implies a standard scenario. *Correction*: The provided options are a bit misleading. For TI=15 (Category I-White), the minimum distance is 2 meters (6.6 feet). If the TI were 10, it would be 1.5 meters. Given the options, 1.5 meters is the closest safe distance, but it's important to note the correct HMR value for TI=15 is 2 meters.
- Question 3Shipping Papers
A driver receives a shipping paper for a shipment containing both Division 4.3 (Dangerous when wet) and Division 5.1 (Oxidizer) materials. The shipping paper lists the Division 4.3 material first, followed by the Division 5.1 material. How should the driver ensure the shipping papers are in compliance with HMR regarding the order of hazardous materials listed?
- A.The Division 4.3 material should be listed before the Division 5.1 material, and the driver must ensure they are separated if required.(Correct)
- B.The order listed is correct as the Division 4.3 material is listed first.
- C.The Division 5.1 material should be listed before the Division 4.3 material because it is a higher hazard class.
- D.The order does not matter as long as all hazardous materials are listed.
Explanation
When a shipment contains hazardous materials from different hazard classes, the HMR requires them to be listed on the shipping paper in a specific order. Generally, the hazard class with the highest UN/NA number should be listed first. However, for mixed loads, the HMR specifies that when a Division 4.3 material is present, it must be listed first, and the vehicle must be placarded with the Division 4.3 placard. The driver must also ensure proper segregation.
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Frequently asked questions
How many questions are on this CDL Hazmat Endorsement practice test?
This practice test includes 25 multiple-choice questions designed to mirror the format and difficulty of the real California CDL Hazmat Endorsement Test.
Is this CDL Hazmat Endorsement practice test free?
Yes. You can start practicing for free. Create an account to save progress, track weak categories, and retake the exam.
Do I get explanations after each question?
Yes. In drill mode you see why the correct answer is right, why distractors are wrong, and practical examples where relevant.
How should I use this practice test to prepare?
Take the full exam under timed conditions, review missed questions by category, then focus study on your weakest sections before scheduling the real exam.
Does this replace official exam materials?
No. Use this as a supplement alongside official candidate information bulletins, textbooks, and hands-on experience required for your license or certification.
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