Section 318(1)(iii) in The West Bengal Motor Vehicles Rules, 1989
(iii)the driver of the vehicle shall keep as much as to the left of the road as is consistent with the safety of the pedestrians and the vehicle shall not be driven on the footpath reserved for pedestrians. When the road is sufficiently broad, the vehicle shall not cross the centre line unless circumstances demand so or the vehicle is intended to run to other sides;