Road signs could warn Londoners of air pollution episodes, says Sadiq Khan

London mayor has told TfL to develop system of alerts and signs to increase awareness of air quality blackspots, BusinessGreen reports Roadside signposts and online alerts could be used to inform Londoners of air pollution hotspots and periods of poor air quality, under proposals announced today by the capital's new Mayor Sadiq Kahn. Londoners should be much better informed when air pollution reaches dangerous levels in the UK capital, Kahn said, announcing he has directed Transport for London (...