evidence: Earlier steam locomotive operated trains largely operated below 100 km/h (62 mph). With the introduction of electric locomotives in later 1920s and newer steam locomotives, speeds of 100 km/h (62 mph) were achieved. With the movement to AC traction in late 1950s and introduction of diesel locomotives, commercial speeds of up to 120 km/h (75 mph) was achieved in the late 1960s. With the introduction of high power electric locomotives in the 1990s, operating speeds of 130 km/h (81 mph) was achieved with further developments leading to speeds of maximum speeds of 160 km/h (100 mph) being realized in the early 2010s. Vande Bharat, an Electric Multiple Unit (EMU), introduced in 2018, is the fastest operational train-set and is capable of reaching 183 km/h (114 mph).