For instance, Oklahoma requires any driver of a vehicle who knowingly
approaches within 15 feet of a person who is in the roadway or at an intersection and who is wholly or partially blind and who is carrying a cane or walking stick white in color, or white tipped with red, or who is using a
dog guide wearing a specialized harness, or who is wholly or partially
deaf and is using a signal
dog wearing an orange identifying collar, or who is physically handicapped and is using a service
dog, shall immediately come to a full stop and take such precautions before proceeding as may be necessary to avoid accident or injury to the person wholly or partially blind,
deaf or physically handicapped.