THE RAILWAYS ACT, 1989 – Chapter XVI – Section 194

194. Presumption Where Notice is Served by Post
Where a notice or other document is served by post, it shall be deemed to have been served at the time when the letter containing it would be delivered in the ordinary course of post, and in proving such service, it shall be sufficient to prove that the letter containing the notice or other document was property addressed and registered.

Forward reference⇒ Section 195