Minnesota is a top dairy-producing state—and tanker drivers are essential. Milk tankers operate daily along I-94, I-35, and I-90, collecting from farms and delivering to processing plants. Beyond dairy, tanker drivers transport fuel, agricultural chemicals, and food-grade liquids across the state’s extensive highway network.
What the N endorsement allows: You can drive vehicles transporting liquids or gases in tanks with individual capacity over 119 gallons and aggregate capacity of 1,000+ gallons. Without this endorsement, you cannot legally haul any bulk liquid cargo in Minnesota.
Minnesota employers hiring tanker drivers:
- Dairy: Land O’Lakes, Kemps, Associated Milk Producers Inc.
- Fuel distribution: Holiday Stationstores, Casey’s, regional fuel haulers
- Agriculture: CHS Inc., fertilizer and chemical distributors
- Food-grade: Liquid sweeteners, oils, and beverage transport
What to expect on the official Minnesota Tank Vehicles test:
- Questions: 20 multiple-choice
- Passing score: 80%
- Topics covered: Liquid surge and vehicle handling, tank inspection, loading/unloading, emergency procedures
- Administered by: Driver and Vehicle Services (DVS)
Consider the X endorsement: Adding the HazMat (H) endorsement to your Tank (N) gives you the “X” endorsement—required for hauling hazardous liquids like fuel, fertilizers, and agricultural chemicals. This combination significantly expands your job options and earning potential in Minnesota’s agriculture and energy sectors.
Minnesota’s Department of Transportation (MnDOT) regulates tanker operations and enforces strict safety standards. Study the official 2026 CDL manual (Minnesota CDL Handbook 2026) to understand all requirements.
Why our practice tests work:
- 20 questions closely resembling the official DVS exam
- Instant feedback with detailed explanations after every question
- No timer – learn at your own pace
- Unlimited attempts to build confidence before test day