Abstract
The technology needed to implement dynamic road pricing systems is developing rapidly. This new technology creates opportunities to implement road pricing systems based on the socio-economic costs of road traffic with different fares over time and type of road. The purpose of this study is to define such a fare system for the Stockholm region and to compare the impacts of this system to the impacts of a system with cordon toll pricing. The results show that such a system reduces car traffic and there is a good possibility that society will benefit from time savings and reduced external effects. (A)