Vehicle registration plates of Romania

The most common format for vehicle registration plates in Romania consists of black letters on white background in the format CC 12 ABC, where CC is a two letter county code, 12 is a two digit group, and ABC is a three letter group. For Bucharest, the format is B 12 ABC or B 123 ABC, where B is code for Bucharest city, 12 and 123 is a two or three digit group, and ABC is a three letter group.

Source: Wikipedia — Vehicle registration plates of Romania (CC BY-SA 4.0)