Fichier:Grade dimension.svgEnglish Graph showing the method of calculting grades. author name string: Madcap Wikimedia username: Madcap URL: https://commons.wikimedia.org/wiki/user:Madcap
Fichier:Track gradient.svg17:16:31 Source Own work This is a derived work of Grade dimension.svg and Higher speed loco ca us.svg which are in the public domain. Author Z22 Other versions