Where is the vehicle license plate with 'Ba K' from?

[SanLily]

Currently, there is no vehicle license plate with 'Ba K'. A license plate is a mandatory item for every vehicle to legally drive on the road. Driving without a license plate is considered illegal. License plates can be temporary or permanent. Temporary plates are made of paper and need to be affixed to the inside of the front and rear windshields. Temporary plates have an expiration date, and driving with an expired temporary plate is equivalent to driving without a license plate. Permanent plates are made of metal and must be secured to the front and rear of the vehicle using anti-theft screws. They also come in different colors, with different types of vehicles requiring different colored permanent plates. Most large buses and trucks require yellow plates, while ordinary household vehicles require blue or green plates.