Most studies on public transport network design deal with single level networks only. Urban public transport networks, however, do not only offer transport services to and from the city centre but also to stations of interurban public transport networks. The fact that there is a population that uses both types of public transport services implies a dependency between these networks. An analytical model is developed to analyse this dependency for two connected networks. For each network, the operator will adopt a certain objective in optimally designing his network. An analysis is made for the cases where a single operator is responsible for both networks, or where two different operators run each network. In all cases, the objectives of profit maximisation and welfare maximisation are used. In the two-operator case, each operator may follow his own objective. The different scenarios lead to sensibly different values for stop spacing, line spacing and frequencies. For interurban public transport companies it appears to be profitable to co-operate with urban public transport companies, or to pursue a strategy for adopting the objective of welfare maximisation for urban public transport network design by the local authorities. In the case of welfare maximisation, namely the authorities' perspective, the impact of two operators instead of a single operator is nearly negligible. (A) For the covering abstract of the conference see ITRD E206647.
Abstract