HYDERABAD: To clear extra rush of passengers, the South Central Railway will temporarily augment Secunderabad-Kakinada tri weekly Cocanada AC express train with one additional AC-II tier and an additional AC-III tier coach that will create 550 additional berths from September 19-29. Kakinada-Secunderabad express will also be have one AC II Tier and one AC III tier coaches from September 18-28, according to a release here on Wednesday.