Cars have long served as the chief means of transport in cities. Their use has risen from one year to the next: for every 100 trips, 82 are made by car, 12 in public transport and 6 by bicycle. Over the longer term, this creates two major problems: ever longer (and more stressful) traffic jams and increasingly dense air pollution in cities. The latter aspect is particularly alarming because it has a direct harmful impact on people’s health.In societies undergoing steady demographic changes, traffic has risen significantly in cities. Urban areas are sources of growth ...
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