law: Railways Act, 1989
  174. Obstructing running of train, etc. 
  If any railway servant (whether on duty or otherwise) or any other
  
  person obstructs or causes to be obstructed or attempts to obstruct any train
  
  or other rolling stock upon a railway,- 
  (a) by squatting or picketing or during any Rail roko agitation
  
  or bandh; or
  (b) by keeping without authority any rolling stock on the
  
  railway; or
  (c) by tempering with, disconnecting or interfering in any other
  
  manner with its hose pipe or tampering with signal gear or otherwise, he shall
  
  be punishable with imprisonment for a term which may extend to two year, or
  
  with fine which may extend to two thousand rupees, or with both.