In North Dakota, how often must the hazmat written test and background check be repeated?
To keep the H endorsement, the federal background check and the written test must be passed each time the CDL is renewed.
North Dakota · NDChange state
Free North Dakota (ND) CDL Hazardous Materials practice test 2026
H endorsement: placarding, shipping papers and the segregation table.
What’s different in North Dakota
Most Hazardous Materials questions are the same federal material in every state. 2 questions in the app are written for North Dakota alone, from the North Dakota Commercial Driver License Manual (North Dakota Information section).
Two North Dakota questions, answer shown
When may a North Dakota Class A holder haul placarded diesel without an H endorsement?
A Class A holder working for a custom harvester, agrichemical business, farm retail outlet or livestock feeder may haul 1,000 gallons or less of diesel in a service vehicle marked with a flammable or combustible placard, within the state of domicile.
A sample question
One example, answer shown. Practicing the rest happens in the app.
Except for bulk packaging, hazard classes listed in Table 2 require placards only when the total amount transported reaches:
Table 2 materials need placards once the aggregate gross weight, including packaging, reaches 1,001 pounds. Table 1 materials must be placarded in any amount.