law: Railways Act, 1989
  189. Railway servants not to engage in trade.
  A railway servant shall not- 
  (a) purchase or bid for, either in person or by an agent, in his
  
  own name or in that of another, or jointly or in shares with others, any
  
  property put to auction under section 83 or section 84 or section 85 or section
  
  90; or
  (b) in contravention of any direction of the railway
  
  administration in this behalf, engage in trade.