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Mississippi Hazmat Test

You'll drive past the Vicksburg Chemical Plant on I-20 – this test prepares you for that reality.

147

Questions

80%

To Pass

Minutes

147 questions · 40 min time limit · 80% to pass

Opens in a practice window — choose your mode inside.

Reviewed by Jack Mahana, CDL Instructor (13+ years)

Last verified: August 2026

All questions sourced from the official Mississippi CDL handbook and FMCSA regulations.

About the Mississippi Hazmat Test

Mississippi's highways handle a lot of hazardous materials. From the chemical plants along the Mississippi River to the oil refineries near Pascagoula, you'll see tankers and flatbeds every day. The Mississippi River's heavy barge traffic also feeds into rail and truck transfers at ports like Natchez and Greenville.

Our practice test focuses on the specific rules you'll face here. We cover placarding for shipments that cross state lines on I-55 and I-59. We also hit the extra precautions needed during Mississippi's hot, humid summers – heat can make certain hazmat loads more dangerous.

You don't get generic questions. Each one ties back to real Mississippi driving conditions: hurricane evacuation routes on I-10, rural two-lane roads near agricultural fertilizer depots, and the busy freight corridors through Jackson and Hattiesburg. Pass this test and you'll be ready for the DMV's official exam.

Topics Covered

✓Placarding – required for shipments passing through Jackson's rail yards and I-20 chemical corridors.

✓Shipping papers – you must keep them within reach when hauling hazmat on Mississippi's winding rural roads.

✓Loading and unloading – safe practices for the hot, humid conditions common along the Gulf Coast.

✓Vehicle marking – DOT numbers visible for inspections on the Bienville National Forest routes.

✓Emergency response – procedures for spills on bridges like the Biloxi Bay Bridge or the US-90 causeway.

✓Security awareness – extra watchfulness when parking at truck stops near the Port of Gulfport.

Study Tips

Start by reading the Mississippi CDL Handbook's Hazmat section. Focus on the nine hazard classes and their placard numbers. Then take our practice test multiple times until you score 90% or higher. Mississippi's DMV gives you 40 minutes for 30 questions – we time you the same way.

On test day, bring your TSA threat assessment receipt. You must complete that background check before the DMV lets you take the Hazmat knowledge test. Also bring your current CDL and a valid ID. Walk-ins are accepted at most locations, but Jackson and Gulfport prefer appointments. Book online at least two weeks ahead.

Mississippi Specific Information

You can take the Mississippi Hazmat test at any DMV office that offers CDL services. Major locations include the Jackson DMV on Industrial Drive, the Gulfport office on 25th Avenue, and the Tupelo center on South Gloster Street. The test fee is $20, plus a $35 TSA background check fee. You pay the background check separately online before you show up.

Appointments are recommended but not required. Walk-ins often wait longer – especially on Mondays and Fridays. Bring your Social Security card, birth certificate, and proof of Mississippi residency. The DMV will fingerprint you during the TSA enrollment. Your hazmat endorsement stays valid for five years, but you must retake the test if it expires.

Frequently Asked Questions

Do I need a TSA threat assessment before taking the Mississippi hazmat test?

Yes, you do. You must complete the TSA background check first. Bring the confirmation receipt to the DMV. Without it, they won't let you test.

How many questions are on the Mississippi CDL hazmat test?

The official test has 30 questions. You need 24 correct to pass – that's 80%. Our practice test matches that exactly.

Can I take the hazmat test at any Mississippi DMV office?

Not quite. Only offices that handle CDL services offer it. Stick with Jackson, Gulfport, Tupelo, or Hattiesburg. Call ahead to confirm.

What happens if I fail the Mississippi hazmat test?

You can retake it the same day if time allows. Otherwise, you wait until the next business day. There's no limit on retakes, but you pay the $20 fee each time.

Does Mississippi require a separate skills test for the hazmat endorsement?

No skills test – it's just a written knowledge exam. But you must already hold a valid CDL. The endorsement gets added to your license after you pass.

Reviewed by Jack Mahana, CDL Instructor (13+ years)

Last verified: August 2026 · FMCSA-compliant content