Section 165 in The Punjab Motor Vehicles Rules, 1989
165. Advertisement and other markings on public service vehicles
. [Section 111] - (1) No advertising device, figure or writing shall be exhibited on any public service vehicle save as may be permitted by the State Transport Authority by general or special order.(2)A public service vehicle, when regularly used for carrying Government mail by or under a contract with the Indian Posts and Telegraphs Department shall exhibit in a conspicuous place upon a plate or a plane surface of the vehicle the words 'MAIL' in read on the white ground, each letter being not less than 100 milimetres in height and of a uniform thickness of 20 milimetres.(3)Save as aforesaid, no motor vehicle shall display any sign or inscription which includes the words 'MAIL'.
