What is an indication that a pedestrian may be visually impaired?

Using a white cane is a widely recognized indication that a pedestrian may be visually impaired. The white cane serves as a mobility tool for individuals with visual impairments, helping them navigate their environment by detecting obstacles and changes in terrain. When drivers and other pedestrians see someone with a white cane, they should exercise caution and be aware that the person may require additional space and attention while they are moving.

While wearing sunglasses can be seen in various situations, it does not specifically signal visual impairment since many people wear sunglasses for protection from the sun or for fashion reasons. Walking slowly can result from numerous factors including general caution or simply being unhurried, and it does not directly indicate a visual impairment. Similarly, while a person walking with a dog (especially a guide dog) can suggest they may have a visual impairment, it's not as universally recognized as the presence of a white cane. Therefore, the white cane is the most definitive sign amongst the options provided.