Jaipur: After a prolonged spell of cold wave conditions, fog and mist affected air, road and rail traffic across the state on Thursday. Fog and mist also affected vehicular traffic in the districts including Churu, Sriganganagar and Hanumangarh. The trains including Jodhpur-Howarh. Ajmer-Sialdah and a few others were running late. Similarly, at least six early morning trains were running late..