What type of vision is required for an Illinois driver's license?

To obtain an Illinois driver's license, the vision requirement is at least 20/40 vision in one eye, with or without corrective lenses. This standard ensures that drivers have sufficient visual acuity to operate a vehicle safely. Vision of 20/40 means that you can see at 20 feet what a person with normal vision can see at 40 feet, which is considered adequate for safe driving.

This level of vision is particularly important for judging distances and recognizing traffic signs, which are crucial for making quick and accurate driving decisions. It's also essential for detecting pedestrians, cyclists, and other vehicles on the road, contributing to overall safety on Illinois highways.

While the other options may seem close, they do not meet the established criteria set forth for safe driving in Illinois.