R3 would not breach NO2 rules

A report suggests that a third runway at Heathrow could be built without breaking the air quality rules.

The research published by the University of Cambridge says that a new runway would cause levels of nitrogen dioxide (NO2) around the airport to rise, but that a predicted reduction in NO2 from road traffic could offset any increase from the expanded airport.

The Airport has been suggesting for some time that the key reason locations around the area have higher than desired levels of NO2 is the road traffic. The report, which has not been commisioned by Heathrow, suggests that levels will fall due to improvements in car engine technology far more than an increase in aviation traffic would cause them to rise.

See more from the BBC.

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