Section 150 in The Bihar Motor Vehicles Rules, 1992
150. Body dimensions.
(1)Every public service vehicle shall have an enclosed body and shall be so constructed that (a) the height of the sides of the body from the floor or the height to the sills of the window, as the case may be, shall not be less than 715 millimetres; (b) if the height of the sides of the body or the sills of the windows, as the case may be, above the highest part of any seat is less than 460 millimetres, provision is made by means of guard rails or otherwise, to prevent the arms of seated passengers being thrust through and being injured by passing vehicles, or to the extent to which side window or Venetians when lowered, their top edge is not less than 460 millimetres above the highest part of any seat.(2)For the purpose of this Rule the seat back shall not be deemed to be a part of the seat.
