In a significant move to control spiralling onion prices ahead of the festive season, the government will transport 1,600 tonnes of buffer stock via railways from Maharashtra to Delhi - the first such initiative using rail transport for the kitchen staple.The special rake, dubbed 'Kanda Express', will depart from Maharashtra's Lasalgaon Railway Station and reach Delhi's Kishanganj Railway Station on October 20, Consumer Affairs Secretary Nidhi Khare announced on Thursday.The government expects this bulk movement to help stabilise prices in the Delhi-NCR region, where buffer stock onions are currently being sold at a subsidised rate of Rs 35 per kg.