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[quote user="Overmod"]I don't propose to insult the Germans by saying they got the impetus for 'new' high-speed line construction from the French, [/quote] It is just true. SNCF commissioned the TGV in 1981, DB the ICE train in 1991. Both were perhaps inspired by the Shinkansen which started in 1964. [quote user="Overmod"]Volker may know if there was any discussion in Germany about implementing negative cant deficiency tilting to get to the 125mph level with existing curve geometries; [/quote] The German Railway Construction and Operating Regulations (EBO) allow a max. superelevation of 7.1'' and a cant deficiency of 5.1''. There were routes e.g. River Moselle valley were 125 mph were not achievable with re-alignments and superelevation. There tilt trains were used: <a href="https://www.welt.de/img/politik/deutschland/mobile152368377/8611622527-ci23x11-w960/Neigetechnik-verkuerzt-Fahrzeit-zwischen-Bayern-und-Thueringen-2.jpg">https://www.welt.de/img/politik/deutschland/mobile152368377/8611622527-ci23x11-w960/Neigetechnik-verkuerzt-Fahrzeit-zwischen-Bayern-und-Thueringen-2.jpg</a> German Railway had tested tilt trains in the mid 1960s with mixed results. German Railway lost interest until the success of the Italian Pendelino and the Svedish X2000. The first new German tilt trains ran in 1992. On most tilt trains the tilting mechanism is deactivated because of continous problems. Regards, Volker
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