The proposal is for China to build five lines designed for 250km/h operation radiating from Bangkok to Chiang Mai, Nong Khai, Ubon Ratchathani, Rayong and Padang Besar.
Nevertheless, Sohpon says Thailand is open to proposals from other countries to build new lines in Thailand. He also says that the high-speed project will be separate from a Baht 170 billion ($US 5.7 billion) project to upgrade the existing network.