Vehicle to be driven on the left side of roadway

Any person driving a vehicle on a public road shall do so by driving on the left side of the roadway and, where such roadway is of sufficient width, in such manner as not to encroach on that half of the roadway to his or her right: Provided that such encroachment shall be permissible-

(a) where it can be done without obstructing or endangering other traffic or property which is or may be on such half and for a period and distance not longer than is necessary and prudent and provided that it is not prohibited by a road traffic sign; or

(b) in compliance with a direction of a traffic officer or a road traffic sign.

These provisions shall not apply in the case of a public road which is restricted to traffic moving thereon in one direction only.