Medical certification requirements

A driver’s medical examination is part of the licensing process for Class 1 through 4 licenses in all Canadian provinces, drivers are not issued a separate medical certificate card, and the licences themselves are therefore considered proof of medical fitness by the U.S. through a reciprocal agreement with Canada.
Some drivers are required to undergo medical examinations. You may have a medical condition or a physical disability that causes a risk to your ability to drive safely. There is also a specific medical examination requirement for seniors with a Class 3, 5, 6, and 7 driver’s licence.
An unsatisfactory medical may result in a restriction being placed on your driver’s licence.
The United States has reciprocal recognition of commercial driver’s licenses (CDL) with Canada. A Canadian CDL generally serves as confirmation that the Canadian driver is medically qualified to operate a commercial motor vehicle (CMV) in the United States.