Section 37(2) in The Haryana Motor Vehicles Rules, 1993
(2)The full name of the transport company, transport society, transport firm owning the vehicle and registration mark as set forth in its registration certificate shall be exhibited on both sides of every transport vehicle in Hindi language or English block letters measuring 100 millimetres in height and 20 millimetres in thickness :Provided that with the approval of the Regional Transport Authority concerned abbreviation of names may be used.
