State Railway of Thailand
…Locomotives and multiple units Active fleet Diesel locomotives Type Manufacturer Numbers Year(s) built Quantity built Power Max speed (km/h) Image Note UM12C (GEK) General Electric 4001-4050 1964 (4001–4040) 1966 (4041–4050) 50 1,320 hp (0.98 MW) (660 hp (0.49 MW)x2) 103 Refurbished around 2010–2011. AD24C…