GMTT0098 Iss 1

This document is issued by the British Railways Board to define the relationship between the existing A.C. Electrification systems and traction & rolling stock (Tand RS) vehicles, where the maximum speed is 200 km/h or less, so that any new vehicles designed and built to operate on the system are compatible with the existing supply requirements. This Group Standard can also be used for the design of new electrification schemes, where vehicles will have a maximum line speed of 200 km/h or less.