100+ Free CDL HazMat Endorsement Practice Questions
Pass your Commercial Driver's License Hazardous Materials (H) Endorsement exam on the first try — instant access, no signup required.
Who must sign the shipper's certification on the shipping paper?
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Sample CDL HazMat Endorsement Practice Questions
Try these sample questions to test your CDL HazMat Endorsement exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1The two main entities that regulate hazardous materials transportation in the U.S. are the DOT and the...?
2What does 'Hazard Class 1' pertain to?
3On a shipping paper, where can you find the emergency contact number for a hazardous material?
4When must placards be displayed on a vehicle carrying hazardous materials?
5What is the primary rule for loading hazardous materials?
6Which of the following is a key responsibility of the shipper when transporting hazardous materials?
7What does Hazard Class 3 represent?
8Which document must accompany a hazardous materials shipment and contains key information about the material?
9When is it acceptable to smoke around a vehicle carrying Class 1 explosives?
10What is the primary purpose of a placard on a hazmat transport vehicle?
About the CDL HazMat Endorsement Exam
The HazMat (H) endorsement allows CDL holders to transport hazardous materials in placardable quantities. The 30-question knowledge test covers federal 49 CFR HazMat regulations and is administered by your state DMV. Drivers must also complete FMCSA-approved ELDT HazMat theory training and pass a TSA security threat assessment.
Questions
30 scored questions
Time Limit
40 minutes
Passing Score
80% (24 of 30)
Exam Fee
Varies by state ($10-$25 knowledge test) plus $86.50 TSA background check (State DMV (knowledge test) under FMCSA federal standards; TSA background check)
CDL HazMat Endorsement Exam Content Outline
Hazardous Materials Regulations
49 CFR DOT/FMCSA hazardous materials regulations, hazard classes, shipping papers, and placarding requirements.
Loading and Unloading
Safe loading, unloading, and handling procedures for hazardous materials including compatibility and segregation.
Emergency Response
Emergency response procedures, spill containment, notification requirements, and use of the Emergency Response Guidebook (ERG).
Vehicle Safety and Inspection
Pre-trip inspections, vehicle markings, safety equipment, and en-route procedures for HazMat vehicles.
How to Pass the CDL HazMat Endorsement Exam
What You Need to Know
- Passing score: 80% (24 of 30)
- Exam length: 30 questions
- Time limit: 40 minutes
- Exam fee: Varies by state ($10-$25 knowledge test) plus $86.50 TSA background check
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
Frequently Asked Questions
How many questions are on the CDL HazMat endorsement test?
The HazMat endorsement knowledge test contains 30 multiple-choice questions. You need to answer 24 correctly (80%) to pass. The federal content is standardized, but the test is administered by your state DMV.
What does it cost to get the HazMat endorsement?
The state DMV knowledge test fee typically ranges from $10-$25, plus a $86.50 TSA Security Threat Assessment fee for the required background check. ELDT HazMat theory training fees vary by provider, typically $50-$200.
Do I need ELDT training before taking the HazMat test?
Yes. Since June 2022, FMCSA requires drivers obtaining their first HazMat endorsement (or upgrading after a lapse) to complete Entry-Level Driver Training (ELDT) HazMat theory from a provider listed on the FMCSA Training Provider Registry before sitting for the state knowledge test.
Why do I need a TSA background check?
Federal law requires all CDL applicants seeking a HazMat endorsement to complete a TSA Security Threat Assessment. The check screens for disqualifying criminal, immigration, and intelligence-related factors. Processing typically takes 30-60 days.
How long is the HazMat endorsement valid?
The HazMat endorsement must be renewed every 5 years (or when your CDL renews, whichever comes first), and the TSA background check must be redone at each renewal. Some states require it more frequently.