At gauge change and voltage change points resp. borders certainly, at main stations and along the route when an express train had to pass, probably. Russian Railways has a project named "Trans-Siberian in Seven Days", which aims to bring down container train times from 14 days in 2008 to 7 days in 2012, and the main improvements needed are better organisation, signalling and station operation.

_{*Lunatic*, n.
One whose delusions are out of fashion.}