Hazmat Endorsement: How to Pass the TSA Background Check

The Hazmat (H) endorsement on a CDL is the only endorsement that requires a federal background check. Here is the full process.

Why TSA is involved

The H endorsement allows transport of hazardous materials in placarded quantities. After 9/11, the federal government required the Transportation Security Administration (TSA) to vet H endorsement holders for terrorism, criminal, and immigration concerns.

The check is called the Hazardous Materials Endorsement Threat Assessment (HME).

Step-by-step application

1. Pass the H endorsement written test (at your state DMV)

This is the easy part. Study the CDL Hazmat manual — typically 30 questions, 80% passing.

Practice CDL Hazmat tests cover the federal Hazmat Materials Regulations (HMR) including:

• Hazard classes and divisions (Class 1-9)
• Loading and segregation rules
• Placarding and marking requirements
• Driving and parking rules for hazmat loads
• Emergency response

2. Apply for the TSA HME assessment

After passing the written test, apply through TSA's online portal at tsa.gov/hazmat-endorsement.

You'll need:

• US passport or birth certificate + driver license
• $86.50 fee (current as of 2026; subject to change)
• Schedule a fingerprinting appointment at an enrollment center

3. Get fingerprinted

TSA enrollment centers are located at:

• Most CDL training schools
• Some local DMVs (varies by state)
• IdentoGO sites in major cities

Bring 2 forms of ID. The appointment takes 15 minutes.

4. Wait for the threat assessment

TSA processes most applications in 30-60 days. Some take longer if there's anything in your record requiring review.

You can check status at the TSA portal.

5. Receive your endorsement

If approved, TSA notifies your state DMV. You return to the DMV with your TSA letter and they add the H endorsement to your CDL.

What can disqualify you

The TSA looks for these "permanent disqualifying offenses":

• Terrorism-related convictions
• Espionage, treason, sedition
• Murder
• Improper transportation of hazmat (federal violation)

And these "interim disqualifying offenses" (within 7 years):

• Felony assault with deadly weapon
• Robbery / extortion
• Drug trafficking / manufacture
• Bribery
• Smuggling
• Immigration violations
• Distribution of controlled substances

You can request a waiver for some interim offenses by providing rehabilitation documentation. Waiver decisions take 3-6 months.

Renewal

H endorsement is valid for 5 years. Renewal requires:

• New TSA HME assessment ($86.50)
• New fingerprints (or transfer from previous if recent)
• Pass the H written test again at the DMV

Start renewal 90 days before expiration to avoid lapse.

Cost summary

Tips

• Apply for HME before the written test if your state allows. Some states won't schedule the H written test until they see your TSA pending status.
• Don't lose your TSA approval letter. Many state DMVs require the original at the counter.
• If denied, you have 30 days to file a written appeal with TSA.

Other CDL endorsements

If you don't need Hazmat, consider these alternatives:

• N (Tank) — bulk liquids, no TSA check.
• P (Passenger) — buses 16+ pax, no TSA check.
• T (Doubles/Triples) — multi-trailer, no TSA check.

See our CDL vs Regular License guide for the full endorsement breakdown.

Ready to start? Begin with the Hazmat practice test and our CDL Hazmat handbook reference.

The full timeline, application to endorsement

Plan for 30-60 days end-to-end. Here's the realistic sequence:

1. Pass the hazmat knowledge test at your state DMV (30 questions, 80% to pass, drawn from the federal model). Some states let you test before the background check; others require TSA clearance first — check your state's order of operations.
2. Apply for the TSA Security Threat Assessment at tsa.gov or by phone. The fee is about $86-$117 depending on whether you have a valid TWIC card (TWIC holders get a reduced-fee, streamlined path).
3. Fingerprint appointment at an authorized enrollment center — bring your CDL, proof of citizenship or lawful status (passport, birth certificate, or permanent resident card), and the fee.
4. Wait for adjudication. Most applicants clear in 5-15 days; anything requiring manual review (common names, old records, foreign-born applicants) can stretch to 45+ days.
5. Take the approval letter to the DMV to have the H (or X) added to your license. The endorsement expires with the TSA assessment — every 5 years you repeat the check, and smart drivers start the renewal 90 days early.

What disqualifies you — permanently vs. temporarily

Permanent disqualifiers (no waiver available):

• Espionage, sedition, treason, or terrorism convictions
• Transportation security incident convictions
• RICO convictions where the predicate act is a permanent disqualifier

Interim disqualifiers (7 years from conviction / 5 years from release, whichever is later):

• Unlawful firearm/explosive possession or dealing
• Distribution of (or intent to distribute) controlled substances
• Fraud, bribery, smuggling, immigration violations, arson, kidnapping, robbery, extortion, and several others

Not disqualifying (common worries that don't matter):

• DUIs — a CDL problem, not a TSA one
• Simple drug possession (vs. distribution)
• Misdemeanors generally, old dismissed charges, civil judgments, bad credit

If you're denied, TSA sends the specific reason and you have 60 days to appeal or apply for a waiver on interim disqualifiers. Waiver approval rates are meaningfully high for old, non-violent offenses with clean records since — don't self-reject by not applying.

Is the hazmat endorsement worth it?

The math for most OTR drivers:

• Cost: ~$100 TSA fee + $10-$50 state test fee + a few hours of study, renewed every 5 years.
• Pay premium: Hazmat loads typically pay $0.05-$0.15 more per mile, and dedicated fuel/chemical routes commonly pay $5,000-$15,000/year over comparable dry-van work.
• Job optionality: Tanker + hazmat (the X endorsement) is the highest-demand combination in most freight markets — fuel haulers alone are perpetually short-staffed.

One caveat: hazmat work carries stricter scrutiny. Roadside inspections are more frequent and more thorough, parking and routing are restricted (no tunnels on many routes, designated parking only), and violations carry higher fines against both driver and carrier.

Study notes for the hazmat knowledge test

The test covers the federal hazmat rules in Section 9 of your state CDL manual. The consistently-tested topics:

• Placarding tables — Table 1 materials (always placarded, any amount) vs. Table 2 (placarded at 1,001+ lbs aggregate). Memorize Table 1: explosives 1.1-1.3, poison gas 2.3, dangerous-when-wet 4.3, organic peroxide type B, poison inhalation hazard 6.1, and radioactive Yellow III.
• Shipping papers — must be within reach with seatbelt on, on the seat, or in the driver's door pouch; and on the seat or in the pouch when you leave the cab.
• Loading/unloading rules — no smoking within 25 feet, engine off for flammables (with exceptions), chock wheels, no hooks through packages.
• Emergency procedures — the Emergency Response Guidebook (ERG), when to move the vehicle vs. evacuate, and the 100-foot smoking rule at crashes.

Drill these with our CDL practice tests — the hazmat section mirrors the federal question distribution.