Longtime encroachment on footpath in East Avenue, Kalyani Nagar

This has surely come up before. Location: Kalyani Nagar - East Avenue, East Avenue and Central Avenue intersection. Opposite old Lifestyle building. Near Hermes apartments. Diagonally opposite Mariplex. Major encroachments on the footpath by vegetable sellers, flower vendors, juice vendors. Pedestrians cannot use the footpath and have to walk on the busy road. These hawkers have taken over permanently. They have been there for years. Why have they not been removed by the PMC? Such a nuisance. How do we ensure by law that they are evicted? It looks like they've made some arrangements with the authorities.