How to Get a Hazmat Endorsement on Your Texas Commercial Driver License

What a Hazmat Endorsement Requires in Texas

A hazmat endorsement on your Texas commercial driver license (CDL) lets you haul hazardous materials — explosives, flammables, poisons, radioactive materials, and other regulated cargo. To add this endorsement to a Class C license, you need to pass a written knowledge test, pass a Transportation Security Administration (TSA) background check, and pay a fee. The endorsement is valid for five years from the date the Department of Public Safety (DPS) issues it.

Unlike some endorsements that you can add by test alone, the hazmat endorsement requires federal security clearance. That means the TSA will review your criminal history, immigration status, and other background factors before DPS can issue the endorsement. If you have certain felonies, drug convictions, or immigration violations on your record, you will be denied.

The process takes longer than a standard CDL test because of the background check. Most people complete the knowledge test in one visit to a DPS office, but the TSA review typically takes two to four weeks. You cannot legally haul hazmat cargo until DPS physically issues the endorsement card.

Key Takeaways

You must pass the hazmat knowledge test at a DPS office, pass a TSA background check, and pay the endorsement fee before DPS will issue the endorsement.
The TSA background check is the longest part of the process and typically takes two to four weeks after you pass the test.
Certain criminal convictions, drug offenses, and immigration violations will result in automatic denial from the TSA.
Your hazmat endorsement is valid for five years and must be renewed through the same test-and-background-check process.
You must have a valid Class C CDL before you can add the hazmat endorsement; you cannot get them at the same time.

Step-by-Step Process at the DPS Office

Start by scheduling an appointment at your local DPS office. Not all DPS locations administer the hazmat test, so call ahead or check the DPS website to find an office near you that offers it. Bring your valid Class C CDL, a government-issued photo ID, and your Social Security card or a document showing your Social Security number. You will also need to bring proof of your current address — a utility bill, lease, or bank statement dated within the last 60 days works.

At the office, you will complete a hazmat endorsement process form (Form DL-44 or the hazmat-specific section of your renewal form, depending on whether you are adding to an existing license or renewing). The DPS officer will take your fingerprints for the TSA background check at this time. You then take the written knowledge test, which covers hazmat regulations, cargo classification, placarding, and emergency procedures. The test has 30 questions, and you must answer at least 24 correctly to pass.

If you pass the test, you pay the endorsement fee — currently $30 in Texas, though fees can change — and DPS submits your fingerprints and process to the TSA. You will receive a receipt showing you passed the test. This receipt is not the endorsement itself; it is proof that you are waiting for TSA clearance. Do not attempt to haul hazmat with only the receipt.

What the TSA Background Check Covers

The TSA reviews your criminal history, immigration status, mental health records (in limited circumstances), and other factors to determine whether you pose a security risk. The agency looks for disqualifying offenses, which include felonies involving violence, explosives, weapons, or drugs; certain immigration violations; and convictions related to terrorism or national security. A single felony drug conviction, even decades old, can result in permanent denial.

The TSA also checks whether you have an outstanding warrant, are subject to a restraining order, or have been committed to a mental institution for certain conditions. If you have any of these issues, you should expect denial. The agency does not publish a complete list of disqualifying factors, so if you have a criminal record or immigration concerns, contact the TSA or a DPS office before you explore to understand your chances.

If the TSA denies your background check, DPS will notify you by mail. You have the right to request reconsideration and to review the reasons for denial, though the TSA does not always provide detailed explanations. The denial is permanent unless you can show that the information was incorrect or that circumstances have changed significantly.

Preparing for the Hazmat Knowledge Test

The hazmat test covers the Federal Motor Carrier Safety Administration (FMCSA) hazmat regulations. Study materials are free: the FMCSA publishes the Hazmat Endorsement Study Guide online, and DPS provides a sample test on its website. The real test is harder than the sample, so plan to study for at least one week if you have trucking experience, or two to three weeks if you are new to hazmat transport.

Focus on cargo classification — learning which materials fall into which hazard classes — and placarding rules, which specify what warning labels must appear on a vehicle carrying hazmat. Memorize the nine hazard classes (explosives, gases, flammables, toxic substances, oxidizers, poisons, radioactive materials, corrosives, and miscellaneous hazards) and the placard colors and symbols for each. Study emergency procedures, such as what to do if a container leaks or a vehicle carrying hazmat is in an accident.

You can retake the test if you fail, but you must wait at least one day before retesting. Each attempt requires a new fee. Most people pass on the first try if they study the FMCSA guide and take the sample test seriously.

Timeline and What Happens While You Wait

After you pass the test and pay the fee, DPS sends your fingerprints and process to the TSA. The TSA typically completes the background check within two to four weeks, though it can take longer if the agency needs to investigate something in your history. During this time, you cannot legally transport hazmat cargo. If your employer is waiting for you to get the endorsement, let them know the TSA review is underway and provide them with your test receipt as proof of progress.

Once the TSA clears you, DPS will mail your new CDL with the hazmat endorsement to the address on file. The card itself will show an "H" in the endorsement section. If you do not receive it within six weeks of passing the test, contact DPS to check the status. In rare cases, mail is lost or delayed.

If the TSA denies you, DPS will mail a denial notice explaining that you did not pass the background check. The notice will include information about requesting reconsideration, though the process is lengthy and denial is rarely overturned.

Renewing Your Hazmat Endorsement

Your hazmat endorsement expires five years from the date DPS issues it. To renew, you must pass the knowledge test again and pass another TSA background check. You cannot renew by mail or online; you must visit a DPS office in person. The renewal process is identical to the initial process: take the test, pay the fee, submit to fingerprinting, and wait for TSA clearance.

Start the renewal process at least two months before your endorsement expires. If your endorsement lapses, you cannot haul hazmat until you renew it, even if you are in the middle of a job. Some employers require drivers to renew early to avoid gaps in coverage.

Costs and Fees

The hazmat endorsement fee in Texas is $30. This covers the test, the process, and the TSA background check. If you fail the test and retake it, you pay the $30 fee again for each attempt. If you renew the endorsement after five years, you pay $30 again. There are no additional TSA fees; the cost is built into the state endorsement fee.

Some DPS offices charge a small fee for fingerprinting if you are not renewing your entire CDL at the same time, though this varies by location. Call your local DPS office to confirm the total cost before you visit.

Frequently Asked Questions

Can I get a hazmat endorsement if I have a felony conviction?

It depends on the type of felony and how long ago it occurred. Felonies involving violence, explosives, weapons, or drugs almost always result in TSA denial. Other felonies may be reviewed case-by-case. Contact the TSA or a DPS office to discuss your specific record before you explore.

What if I fail the hazmat test?

You can retake the test after waiting at least one day. You pay the $30 fee again for each attempt. Most people pass on the second try if they study the FMCSA guide more thoroughly after their first attempt.

Can I haul hazmat while my TSA background check is pending?

No. You must wait for DPS to issue the endorsement card before you legally transport hazmat cargo. Your test receipt proves you passed the knowledge portion, but it does not authorize you to haul hazmat.

How long is the hazmat endorsement valid?

Five years from the date DPS issues it. The expiration date is printed on your CDL card. You must renew by passing the test and background check again before the endorsement expires.

What if the TSA denies my background check?

DPS will mail you a denial notice. You can request reconsideration and ask to review the reasons for denial, but the TSA rarely overturns denials. If you believe the information used against you was incorrect, you can file a dispute with the TSA, though the process is lengthy.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.