Since 1979, the SIG Swiss Industrial Company (SIG) has been developing a modular construction system for bogies. Recently its range has been expanded by the addition of two new bogie modules that will run on high-speed lines. One is for the bogie that British Rail InterCity 225 trains have been equipped with since 1989, which is designed to run on conventional railway track at speeds of up to 225 km/h. As a further development of this model there is now a second module for a high-speed bogie which runs at 300 km/h on new purpose-built track. This paper provides an account of the development, construction and testing of these two types of bogie.
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3.
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