The crosswalk traffic light has a wheelchair sign

The wheelchair sign on the crosswalk traffic light is a sign of a special passage for persons with disabilities. This sign is blue and is used to indicate access for people with disabilities in wheelchairs. This is to protect the right of passage for persons with disabilities and allow them to receive appropriate assistance and convenience when crossing the road.

Wheelchair signs at crosswalk traffic lights are part of many cities’ accessibility features. This kind of sign aims to encourage the public to pay attention to and respect the needs and rights of persons with disabilities, while also providing a more convenient and safe transportation environment for persons with disabilities.

If you encounter this sign and see someone with a disability crossing the street, you'd better give them enough time and space to pass. If you encounter a disabled person with limited mobility, you can offer to help them cross the road safely.

Hope this information is helpful. If you have any further questions or need further assistance, please feel free to let me know.