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North Carolina Tanker Vehicles Test

Driving a tanker on I-40 through the Smokies? You'll need to know how surge works on those steep grades.

Questions

80%

To Pass

Minutes

70 questions · 25 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 North Carolina CDL handbook and FMCSA regulations.

About the North Carolina Tanker Vehicles Test

North Carolina's tanker drivers haul everything from gasoline to milk. Our practice test covers the state-specific knowledge you'll need on roads like I-85, I-95, and US-74. You can't afford to fail—your CDL depends on it.

We focus on liquid surge and how it affects your vehicle. That's especially important when you're climbing or descending the mountains on I-40 near Asheville. A sudden stop on a wet road? That's where surge gets dangerous fast.

The test also covers emergency procedures, vehicle inspection, and proper loading techniques. Did you know North Carolina requires a separate tanker endorsement even for hazmat tankers? You'll need both endorsements to haul flammable liquids.

Practice with us. Each question mirrors the actual DMV test. No fluff. Just the stuff you need to pass on your first try.

Topics Covered

✓Liquid surge control – critical on NC's curvy mountain highways like the Blue Ridge Parkway

✓Braking technique with partial loads – common when hauling fuel to rural stations in the Piedmont

✓Tank baffle configurations and how they affect handling on I-95 flat stretches

✓Emergency stopping distances on wet roads (NC gets over 45 inches of rain yearly)

✓Proper loading and unloading procedures for bulk liquids at industrial sites in the Triangle

✓North Carolina specific tanker inspection requirements (including annual brake checks for commercial vehicles)

Study Tips

Study the North Carolina CDL Handbook's tanker section. Focus on the surge diagram and the braking distance table. Then take our practice test. Miss a question? Read the explanation, then retake it. Repetition is key.

Schedule your DMV appointment early – wait times at popular offices like Charlotte and Raleigh can be weeks. You'll also want to bring your medical certificate and proof of residency. Don't forget the $15 endorsement fee (cash or card).

North Carolina Specific Information

North Carolina offers the tanker endorsement test at every NCDMV driver license office that handles commercial licenses. You must pass the general knowledge and air brakes tests first (if applicable). Make an appointment online at ncdot.gov/dmv – walk-ins are rare now.

The test costs $15 for the endorsement. You'll take it on a computer. Time limit is 25 minutes for 20 questions. If you fail, you can retake the next business day. No additional fee for retakes within the same visit. But you do have to wait 24 hours.

Pro tip: bring your CDL permit, medical certificate, and a valid ID. If you're from out of state, you still need to meet North Carolina's residency requirements. Check the NCDMV website for the latest office hours.

Frequently Asked Questions

Do I need a separate tanker test in North Carolina if I already have a hazmat endorsement?

Yes. Hazmat and tanker are two different endorsements in NC. You have to pass both knowledge tests and get both on your CDL.

How many questions are on the NC tanker endorsement test?

20 questions. You need 16 correct (80%) to pass. Time limit is 25 minutes.

Can I take the tanker test online in North Carolina?

No. You have to take it in person at an NCDMV office. No online option for CDL endorsements.

What happens if I fail the tanker test? Can I retake it same day?

You can retake the next business day. No additional fee on the same visit. Just wait 24 hours.

Does North Carolina waive the tanker test for military drivers?

Possibly. Active duty or veterans with valid CDL experience may get a skills test waiver. Contact NCDMV to check your eligibility.

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

Last verified: August 2026 · FMCSA-compliant content