THE RAILWAYS ACT, 1989 – Chapter XVI – Section 193

193. Service of Notice, etc., by Railway Administration
Unless otherwise provided in this Act or the rules framed there under, any notice or other document required or authorized by this Act to be served on any person by a railway administration may be served:-

(a) By delivering it to the person; or
(b) By leaving it at the usual or last known place of abode of the person; or
(c) By registered post addressed to the person at his usual or last known place of abode.

Forward reference⇒ Section 194