Do I need a new medical certificate for the Class A upgrade?

Class A and Class B CDLs share the same federal medical qualification rules under 49 CFR Part 391. If your current DOT medical card is valid and your self-certification with the state DMV is accurate, you don't need a new exam for the upgrade. If your medical card has expired or your self-certification category is changing (for example, from intrastate non-excepted to interstate non-excepted because of new job duties), you'll update your state DMV file.

Our course focuses on driving theory, not medical requirements, but we remind drivers of the self-certification step in the completion email. The medical-certification continuity is an efficiency advantage of the upgrade path — drivers don't have to repeat the medical exam process they already completed for their original Class B, as long as the existing certificate is valid. Drivers with health changes since their last medical exam should plan to update before applying for the Class A upgrade rather than discovering the issue at the DMV.

The self-certification category change matters specifically for drivers moving from local Class B work to interstate Class A work. Different self-certification categories have different medical rules, and drivers operating in a category they're not certified for can face disqualification regardless of their actual medical fitness. The state DMV self-certification process is straightforward but easy to overlook in the rush of the CDL upgrade transition. Drivers planning to drive interstate after upgrade should specifically verify their self-certification status reflects the new operating scope before starting work in the new category.