Commercial Driver’s License (CDL) Practice Exam 2025 - Free CDL Practice Questions and Study Guide.

A commercial driver's license (CDL) holder is required to complete a medical examination every two years to ensure they meet the necessary health and safety standards for operating commercial vehicles. This periodic examination assesses the driver's vision, hearing, and overall physical condition to confirm that they are fit to drive safely.

While the standard interval is every two years, some drivers may need to undergo these examinations more frequently based on specific health conditions or recommendations from their medical examiner. If a driver has a medical condition that could impact their ability to drive safely, they might have to provide updated medical documentation more frequently than the standard two-year requirement. This ensures that all drivers are continuously capable of operating their vehicles without posing safety risks to themselves or others on the road.