law: Railways Act, 1989
  137. Fraudulently traveling or attempting to travel
  
  without proper pass or ticket. 
  (1) If any person, with intent to defraud a railway
  
  administration,-
  (a) enters or remains in any carriage on a
  
  railway or travels in train in contravention of section 55, or
  (b) uses or attempts to use a single pass or a
  
  single ticket which has already been used on a previous journey, or in the case
  
  of a return ticket, a half thereof which has already been so used.
  he shall be punishable with imprisonment for a term which may
  
  extend of six months, or with fine which may extend to one thousand rupees, or
  
  with both:
  Provided that in the absence of
  
  special and adequate reasons to the contrary to be mentioned in the judgment of
  
  the court, such punishment shall not be less than a fine of five hundred
  
  rupees. 
  (2) The person referred to in sub-section (1) shall also be
  
  liable to pay the excess charge mentioned in sub-section (3) in addition to the
  
  ordinary single fare for the distance which he has traveled, or where there is
  
  any doubt as to the station from which he started, the ordinary single fare
  
  from the station from which the train originally started, or if the tickets of
  
  passengers traveling in the train have been examined since the original
  
  starting of the train, the ordinary single fare from the place where the
  
  tickets were so examined or, in case of their having been examined more than
  
  once, were last examined.
  (3) The excess charge referred to in sub-section (2) shall be a
  
  sum equal to the ordinary single fare referred to in that sub-section or fifty
  
  rupees, whichever is more.
  (4) Notwithstanding anything contained in section 65 of the
  
  Indian Penal Code (45 of 1860), the court convicting an offender may direct
  
  that the person in default of payment of any fine inflicted by the court shall
  
  suffer imprisonment for a term which may extend to six months.