G series (trains)

G series trains (Chinese: 高铁) are the fastest trains in China. They can reach speeds of up to 350 km/h (217 mph) but on tracks can only run at 300 km/h (186 mph). G trains are defined by a G followed by a number ex. G2 (Beijing South- Shanghai Hongqiao). G series trains are normally the latest generation EMU trains. G trains are faster than D trains, T trains, K trains and number-only trains. Since G trains are normally the fastest trains, they are a bit different than D trains. G trains may have hardened mud instead of gravel under the tracks because of the fast speed.