Ключевые слова: air pollution, automotive, ban, clean air, co2, concept, country, diesel ban, diesel ban sign, diesel fuel, diesel scandal, disel, driving ban, ecological, emission, environment, environmental, environmental zone, flag, flag of japan, forbidden, fossil fuel cars, global warming, headline, illustration, japan, law, motor vehicle, nitrogen oxides, particulate matter, polluting, pollution, prohibited, road sign, sign, symbol, traffic, transport, transportation,