Section 144(5) in The Punjab Motor Vehicles Rules, 1989
(5)The State Transport Authority, may by order, in writing, direct that until such time as the vehicles have been taken off the road after having lived their lives nothing in this rule in regard to and consequent upon the provisions requiring that the vehicle shall be driven from the right hand side shall apply to a public service vehicle or a specified class of public service vehicle fitted with left hand steering control and obtained through the Disposal Organisation of the Central Government.