What must be present in a CMV driver's medical certification documentation?

The presence of the medical examiner's signature and the date of the examination in a CMV driver's medical certification documentation is essential because it verifies that the examination was conducted by a qualified professional. This signature acts as an official endorsement that the driver has undergone the necessary medical assessment to determine their fitness to operate a commercial motor vehicle. Additionally, the date serves to indicate when the examination took place, which is crucial for compliance with regulations that require regular medical evaluations for commercial drivers. This ensures that the information about the driver's health status is current and reliable, providing a safeguard for both the driver and public safety on the roads.