Most existing SRT lines use metre gauge, although standard gauge is used on rapid transit lines.
As of 2013, approximately 4,346 km (2,700 mi) of track was in use throughout Thailand:
4,346 km (2,700 mi) metre gauge (1,000 mm (3 ft 3 ³⁄₈ in))
151 km (94 mi) standard gauge (1,435 mm (4 ft 8 ¹⁄₂ in))
Most existing SRT lines use metre gauge, although standard gauge is used on rapid transit lines. As of 2013, approximately 4,346 km (2,700 mi) of track was in use throughout Thailand:
4,346 km (2,700 mi) metre gauge (1,000 mm (3 ft 3 ³⁄₈ in))
151 km (94 mi) standard gauge (1,435 mm (4 ft 8 ¹⁄₂ in))
Rail transport in Thailand