Free Maryland 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 Maryland 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 Requirements
A commercial motor vehicle (CMV) transporting a shipment of Division 4.3 (dangerous when wet) materials requires placarding. Under what specific conditions must the vehicle be placarded on all four sides?
- A.When the gross weight of the Division 4.3 material exceeds 500 pounds and the material is not packaged in a carload or TL/LTL shipment.(Correct)
- B.Whenever any quantity of Division 4.3 material is transported, regardless of the gross weight.
- C.Only when the gross weight of the dangerous when wet material exceeds 1,000 pounds.
- D.When the total gross weight of all hazardous materials on the vehicle exceeds 1,000 pounds, and Division 4.3 is among them.
Explanation
When the gross weight of Division 4.3 material exceeds 500 pounds, and it is not shipped as a carload or TL/LTL, the vehicle must be placarded on all four sides. Different thresholds apply for different divisions and shipping methods.
- Question 2Mixed Loads and Subsidiary Hazards
You are transporting a mixed load of hazardous materials. One of the materials is UN2806, GALLIUM ARSENIDE, a Division 6.1 toxic substance. Another is UN1993, FLAMMABLE LIQUID, n.o.s., with a Packing Group III. Which subsidiary hazard placard must be displayed on the vehicle if the gross weight of UN2806 exceeds 1,000 pounds?
- A.A Class 6.1 (Poison) subsidiary hazard placard.(Correct)
- B.A Class 3 (Flammable Liquid) subsidiary hazard placard.
- C.A Class 9 (Miscellaneous) subsidiary hazard placard.
- D.No subsidiary hazard placard is required for UN2806.
Explanation
Since UN2806 is a Division 6.1 toxic substance, and its gross weight exceeds 1,000 pounds, a Class 6.1 (Poison) subsidiary hazard placard must be displayed. The presence of UN1993 does not negate the requirement for UN2806.
- Question 3Radioactive Materials
A driver is transporting a shipment of radioactive material, UN2915, RADIOACTIVE MATERIAL, EXCEPTED PACKAGE – LIMITED QUANTITY OF MATERIAL. What is the minimum transport index (TI) allowed for a single package of this material?
- A.0.5
- B.1.0(Correct)
- C.5.0
- D.0.1
Explanation
For radioactive material in an excepted package, limited quantity, the maximum TI allowed for a single package is 1.0. This is a critical safety parameter for managing radiation exposure.
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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 Maryland 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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