A driver is considered unqualified if their visual acuity is less than:

A driver is considered unqualified if their visual acuity is less than 20/40. This standard is critical because it ensures that drivers have sufficient vision to operate a vehicle safely. The 20/40 vision requirement indicates that a person can see at 20 feet what a person with normal vision can see at 40 feet, thus demonstrating adequate visual capability for driving.

In the context of commercial driving, having a vision standard helps in preventing accidents that may arise from poor visibility or inability to see hazards on the road. Meeting or exceeding the 20/40 standard allows for a safer driving experience for both the driver and others on the road. It's essential for medical examiners to assess visual acuity to ensure that all drivers meet this minimum requirement for safety.