We haven't a special standardized abbreviation for Bucureşti; but you can write Buc. The car code is only B.
The country abbreviated as ROU is Romania.
ROU is Romania, it was changed to ROU from ROM in 2007
Romania
ROU is derived from Roumanie.
Originally called ROM, Romania changed its short designation to ROU when citizens noticed the similarity to the Roma people, known in some circles as Gypsies.
The cause is the Romanian government indifference and stupidity.
Cătălina Ponor Romania (ROU)
Romania
RO - Romania
Cătălina Ponor Romania (ROU)
Transylvania is part of Romania, and the currency in Romania is the Romanian Leu (abbreviation: RON).