What is the minimum visual acuity required for a CMV driver to be certified if using corrective lenses?

The minimum visual acuity required for a commercial motor vehicle (CMV) driver to be certified while using corrective lenses is 20/40. This standard ensures that drivers have sufficient vision to safely operate large vehicles, which are more challenging to maneuver and require better visual acuity for tasks such as detecting obstacles, interpreting road signs, and ensuring the safety of passengers and other road users.

The 20/40 requirement indicates that when wearing corrective lenses, a driver has vision that allows them to see clearly at 20 feet what a person with normal vision can see at 40 feet. This standard is crucial for maintaining both the driver's safety and the safety of others on the road. The other options listed do not meet the necessary criterion, as they either pertain to unaided vision or do not reach the 20/40 mark with corrective lenses.