Railway applications. Track. Switches and crossings - Requirements for geometric design subscription-only Annex I b) in the

Annex I b) in the Notes below definitions of certain parameters

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• the limits of supply

This European Standard supersedes BS EN 50086-1:1994 which will be withdrawn on 30 June 2008

Railway applications. Track. Switches and crossings - Requirements for geometric design subscription-only Annex I b) in the1 Scope This part of this European Standard covers the following subjects: geometric design principles for wheel guidance; definition of basic limits of supply; applied forces and their adequate support; tolerance levels. These are illustrated herein by application to a turnout. The main switch and crossing components are represented in turnouts and the principles used in turnouts apply equally to more complex layouts.