🚛 Washington CDL Hazmat Endorsement
Washington CDL Hazmat Endorsement — Exam Prep 2026
Prepare for the Washington CDL Hazmat knowledge test with 500+ practice questions covering FMCSA regulations, placard rules, shipping papers, and security plans. Free to start.
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Washington CDL Hazmat Test
Administered by Washington State Department of Licensing (DOL)
30
Questions
80%
Passing Score
24/30
Correct to Pass
~$86.50
TSA Assessment
Washington CDL Hazmat — What to Expect
In Washington, the CDL Hazmat (H) endorsement is issued by the Washington State Department of Licensing (DOL). Washington's driver licensing runs through the Department of Licensing; the Hazmat knowledge test is taken at a licensing office while the TSA screening is federal via IdentoGO.
The knowledge test has 30 questions and requires an 80% passing score — at least 24 correct. The exam is based on the federal FMCSA regulations under 49 CFR, which are the same in all 50 states, so the study material does not change from state to state.
Before the H endorsement can be added to your Washington CDL, you must pass a TSA Security Threat Assessment (background check), about $86.50, at an authorized enrollment center — processing takes 2–4 weeks, so apply early.
Endorsement fee: Varies — confirm with the Washington DOL. Retake wait: Varies by office.
What the Practice Covers
Web Practice Features
5 Free CDL Hazmat Practice Questions
No account required. These reflect the federal (49 CFR) content on the Washington CDL Hazmat knowledge test.
Q1.Which endorsement must a CDL driver have to transport hazardous materials in amounts requiring placards?
Q2.Hazard Class 2 is comprised of:
Q3.Which placard uses a blue background?
Q4.Most hazmat classes require a placard only when the aggregate gross weight equals or exceeds:
Q5.The identification number on shipping papers and packages must be preceded by:
Study Smarter for the Washington CDL Hazmat Test
VoltExam CDL Hazmat web practice covers every topic tested — hazmat classes, placard thresholds, shipping papers, security plans, and driver responsibilities. Timed exam mode simulates the real test.
Web access works in your browser. Native iOS and Android apps are separate purchases for offline mobile study.
Washington CDL Hazmat — Frequently Asked Questions
How many questions is the Washington CDL hazmat knowledge test?
The CDL Hazmat endorsement knowledge test has 30 questions, and you must answer at least 24 correctly (80%) to pass. In Washington the test is administered by the Washington State Department of Licensing (DOL). The content is federal (49 CFR) and is the same in every state.
Where do I take the Washington CDL hazmat test?
Washington's driver licensing runs through the Department of Licensing; the Hazmat knowledge test is taken at a licensing office while the TSA screening is federal via IdentoGO.
How much does the Washington CDL hazmat endorsement cost?
Varies — confirm with the Washington DOL. Separately, federal law requires the TSA Security Threat Assessment, which costs about $86.50 and is paid to the TSA enrollment provider — not to the state.
Do I need a background check for the hazmat endorsement?
Yes. Federal law requires every CDL Hazmat endorsement holder to pass a TSA Security Threat Assessment before the H endorsement is issued. You apply at an authorized TSA enrollment center; processing typically takes 2–4 weeks. You can take the written knowledge test while the check is pending, but the endorsement is not issued until TSA clears you.
Can I retake the Washington hazmat test if I fail?
Yes — the retake wait varies by office. Confirm the current retake policy with the Washington State Department of Licensing (DOL). The endorsement is valid for the term of your CDL (commonly up to 5 years), and renewal requires passing the test and a new TSA assessment again.
Studying in a Different State?
The main CDL Hazmat prep page covers every state.