law: Railways Act, 1989
  13. Protection for Government property. 
  Nothing in sections 11 and 12 shall authorize- 
  (a) a railway administration of the Government railway to do
  
  anything on or to any works, lands or buildings vested in, or in the possession
  
  of, a State Government without the consent of that Government; and
  (b) a railway administration of a non-Government railway to do anything
  
  on or to any works, lands or buildings vested in, or in the possession of, the
  
  Central Government or a State Government without the consent of the Government
  
  concerned.