China will provide early earthquake warnings for its high-speed railway network within three years to reduce the threat to the world''s longest rail network, which transports more than 1 billion passengers a year.

　　The China Earthquake Administration and China Railway Corp signed an agreement on Tuesday to begin a trial that aims to bring the country''s high-speed railways into the national earthquake early warning system, a statement from the administration said.

　　A pilot run will be conducted before the early warning service is officially in operation, it said.

（责任编辑：冯杨洋）