This study shows that an extension and an improvement of transport system lead to more than proportional traffic growth. This applies to all modes of transport. The decision- makers are faced with the question whether to accept such growth when specific changes are aimed at (such a change in modal split etc.) or to inhibit people's wishes. There are possibilities to contain an additional traffic increase: one would be to counterbalance each improvement by reducing transport supply elsewhere, another to impose full actual costs upon traffic, i.c. to increase the costs of a journey.
Abstract