UK company Go - Ahead Group has undertaken the trial of a bus - mounted filtering system which removes and filters ultra - fine particles from the air . The system has been fitted to a diesel bus which will clear the atmosphere as it travels around London and , if successful , could be rolled out to Go Ahead ’s entire fleet of 5,000 vehicles . Southampton was selected for the trial of the Bluestar bus after the World Health Organization said the city had reached its limits for unsafe air quality levels . It is also one of five UK cities drawing up pollution plans for the government .
UK company Go-Ahead Group has begun the trial of a bus-mounted filtering system which removes and traps ultra-fine particles from the air. The system has been fitted to a diesel bus which will clean the atmosphere as it travels around Southampton and, if successful, could be rolled out to Go Ahead’s entire fleet of 5,000 vehicles. Southampton was selected for the trial of the Bluestar bus after the World Health Organisation said the city had reached its limits for unsafe air quality levels. It is also one of five UK cities drawing up pollution plans for the government.