US interurban trains On this crossover between the tram (streetcar) and the high-speed train, Jacobs bogies occurred on the latest equipment of any significance, the two Electroliner trains (1941–1976). They were suited for streets with tight curves, the Chicago El and running through the countryside at approximately . They served the Chicago–Milwaukee line and later the Philadelphia area. Advantages Safety, because the trains are less prone to collapse like an accordion after derailing. A Eurostar train has been recorded as having derailed at a speed close to 300 km/h with no resultant loss of life or severe injuries among its passengers. Lower weight and simpler and cheaper construction because bogies are heavy, expensive, and complex structures. Less rail squeal and other wheel-to-rail noise because of fewer bogies. Disadvantages The cars of the vehicle/unit are semi-permanently coupled and can only be separated in the workshop. However, some flexibility may be achieved by coupling two or three units together into one train. Fewer bogies and fewer wheelsets mean greater axle loads – if everything else is equal. Gallery References Bogie