Section 146 in The Bihar Motor Vehicles Rules, 1992
146. Attachments to Motorcycle.
(1)Every side-car attached to a motorcycle shall be so attached at the left hand side of the motorcycle, that the wheel thereof is not outside the perpendicular planes at right angles to the longitudinal axis of the motorcycle passing through the extreme projecting points in front and in the rear of the motorcycle.(2)No pillion seat shall be attached to a motorcycle fitted with an engine having capacity of less than forty eight cubic centimeters.
