Air pollution cameras trialled on London roads to monitor vehicle emissions | London | News | London Evening Standard

Pollution cameras created by an ex-NASA scientist are being installed on two London roads in a £149,000 trial to measure emissions given off by passing vehicles. The temporary cameras, which will each be in place for a week, pass a laser beam through exhaust fumes to detect changes in light, giving an estimation of emissions emitted.   The emission detection and reporting devices (EDAR), developed by ex-NASA scientist Stewart Hager, were proposed by air pollution scientists at the University of Birmingham, University of Leeds and Kings College London.


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