Railway applications. Track. Switches and crossings - Requirements for geometric design subscription-only The development of ISO/TR 22957

The development of ISO/TR 22957 is a result of organizational requests to receive vendor-neutral industry information associated with technology standards

BS EN 50041 is covering devices fitted with either independent (snap) action contact elements designated (1)

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

This European Standard supersedes BS EN 50086-1:1994 which will be withdrawn on 30 June 2008

adopting classifications

Railway applications. Track. Switches and crossings - Requirements for geometric design subscription-only The development of ISO/TR 229571 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.