Zielona fala w miejskim ruchu drogowym
Green wave in urban traffic

Summary/Abstract: Over 70% of the European population lives in urban areas. This puts pressure on urban transport systems, leading to increased environmental impacts. Such impacts are particularly large in cases where the traffic caused by vehicles with internal combustion engines is repeatedly braking and accelerating due to poorly planned traffic flow. We do not know exactly how much of the pollution is increased by braking and accelerating vehicles at traffic lights; on the other hand, we can evaluate the contribution of higher fuel consumption. We have evaluated such an increase in fuel consumption in the real case of a road section in Celje. Based on the obtained results, we are able to estimate the factor of pollution increasing caused by accelerating. By adding the estimates of pollution caused by braking, we get an overall picture of the importance of ensuring a steady flow of traffic to reduce pollution in urban environments.

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