law: Railways Act, 1989
  192. Service of notice, etc., on railway administration.
  Any notice or other document required or authorized by this Act to
  
  be served on a railway administration may be served, in the case of a Zonal
  
  Railway, on the General Manager or any of the railway servant authorized by the
  
  General Manager, and in the case of any other railway, on the owner or lessee
  
  of the railway or the person working the railway under an agreement. 
  (a) by delivering it to him; or
  (b) by leaving at his office; or
  (c) by registered post to his office address.