Sattur Chamber of Commerce and Industry has made a plea for operation of a double-decker train between Chennai and Tirunelveli and another such train between Tirunelveli Bangalore soon. In a letter addressed to Union Railway Minister Pawan Kumar Bansal, the chamber said that since Chennai and Bangalore are busy centres, trains to these destinations are always full. If run during the day, these would benefit immensely the common people as the fares would be economical, it pointed out.