Using Longer Red Traffic Lights to Reduce Pollution


Intelligent Traffic Control in Copenhagen(Copenhagenize, Mar. 29, 2012)

What do you do if your proposal to implement congestion pricing to reduce both congestion and pollution is blocked by conservative political forces. If you are the mayor of Copenhagen, you use intelligent stoplights that, counter-intuitively, are used to increase the delays and congestion by increasing the red light times. This step is taken on days when pollution exceed certain levels and is designed to encourage drivers, warned in advance, to leave their cars at home. With the same population as Canada’s capital at 1.2 million, Copenhagen has almost twice the number of premature deaths due to air pollution (800/year), so that action to reduce vehicle emissions is needed. 7 million Kroner has been budgeted for the pilot project- about one Canadian dollar for each citizen of that city.

To see Key Quotes and Links to key reports about this post, click HERE

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