The Times of India. Jaipur: Jaipur Development Authority (JDA) will build green medians along the edges of 11 city pavements as a pilot project to prevent vehicles and roadside carts from taking over pedestrian. Jaipur: The Jaipur Development Authority’s (JDA) Traffic Control Board is preparing to crack down on pavement encroachments across the city, but a glaring violation outside the authority’s.