MULTAN - The City Traffic Department has launched a refreshment mobile canteen for traffic wardens in collaboration with a local educational institution on Tuesday. The canteen will approach wardens at different city points and provide them with cold water, drinks and other refreshment items to prevent them from scorching heat. The traffic wardens perform their duties at different chowks to keep traffic running in this tough weather and the need of a refreshment service was being badly felt to facilitate the wardens.