Messages instructing motorists to switch off their engines when waiting at red lights appear to have had an effect, according to researchers.
The trial run by researchers at the University of East Anglia saw signs erected at a Norwich junction within an Air Quality Management Area.
Three messages were tested:
• Think about your actions. When the traffic lights are red, turn-off your engine
• Join other responsible drivers in Norwich. Switch-off your engine when the traffic...
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