Thailand's State Railways (SRT) is accelerating the Bangkok-Nong Khai high-speed rail megaproject (520.7 billion baht) as a Thai-China collaboration with 100% Thai government investment. Phase 1 (Bangkok-Nakhon Ratchasima, 250 km) is 55% complete and targeted for 2030; Phase 2 bidding (Nakhon Ratchasima-Nong Khai, 356 km) opens December 2025 with completion by 2031. The project includes five supporting initiatives: dual-track expansion (Khon Kaen-Nong Khai), a transshipment hub at Na Tham, the Thai-Laos-China connector, bridge upgrades, and a new cross-border bridge (downstream, starting 2027, completion 2030). When complete, the line will integrate trade and tourism across Thailand, Laos, and China via Kunming.