The 308km railway will reduce travel time between the two cities from around two hours to about one and a half hour during its initial operational stage. On Wednesday, engineers began to test the new line, which stretches 185 km across Sichuan Province and runs 123 km through Chongqing City. A total of 309 bridges and 38 tunnels were built along the main line. The railway is part of a major eastwest highspeed rail corridor project included in China'plan.