Sentence:  A “moving platform” scheme...is more technologically ambitious than maglev trains even though it relies on <WSD>conventional</WSD> rails. Local trains would use side-by-side rails to roll alongside intercity trains and allow passengers to switch trains by stepping through docking bays. 
Meaning of the word marked with <WSD> tags:  Pertaining to a convention, as in following generally accepted principles, methods and behaviour.