Until recently, investments for improving transportation infrastructure have been undertaken solely on a national level. Nowadays, however, since international traffic is increasing significantly, there is a growing tendency, especially among European countries, to undertake transportation investments as a group rather than alone. Such multinational transportation investments are beneficial to ...

A methodology is developed in this paper for evaluating and enhancing the performance of urban transportation systems in the aftermath of a disaster. A performance measure is proposed for assessing overall and distributional impacts based on the concept of accessibility. The methodology is demonstrated with two case studies. The first focuses on passenger railroad disruption in the catastrophic...

We consider the QoS-aware Multicommodity Flow problem, a natural generalization of the weighted multicommodity flow problem where the demands and commodity values are elastic to the Quality-ofService characteristics of the underlying network. The problem is fundamental in transportation planning and also has important applications beyond the transportation domain. We provide a FPTAS for the QoS...

ABSTRACT NETWORK 2001 has been developed to provide transportation planners with additional flexibility in analyzing road systems. While NETWORK 2000 was limited to minimizing costs, NETWORK 2001 can use weighted objective function components to minimize road system length. This paper presents NETWORK 2001 and the new algorithm implemented in the program with its applications. Total open road l...

The recent policy discussions about information technology in transport and trafficdemand management have increased the interest in activity-based approaches to the analysis oftravel behaviour, in particular in the modelling of household activity scheduling which is at thecore of many of the required changes in travel behaviour. The paper is a state-of-the-art reviewof conceptua...

TedChing in substantive areas ofphnning has become increasingly calculative. Students have been taught to use techniques, but not to ask whether they are asking the right questions A new course whlch attempted to instead emphasize a meditatlve approach to transportation planning is described. A theme of exposing and criticizing assumptions-bubble bursting--lies at the heart of the course. Philo...

In this paper a method to create GIS-based accessibility indicators is presented. The method allows to create person-by-person and store-by-store (disaggregate) accessibility indicators but also to derive zonal summary (aggregate) indicators that can be used in more traditional transportation planning applications. These indicators have also been used as explanatory variables in person-based tr...

Many interesting route planning problems can be solved by computing shortest paths in a suitably modeled, weighted graph representing a transportation network. Such networks are naturally road networks or timetable networks of public transportation. For large networks, the classical Dijkstra algorithm to compute shortest paths is too slow. And therefore have faster algorithms been developed in ...

The need for cooperation in the planning of metropolitan trans­ portation facilities has taken on added significance as a result of the Interstate Road Program with its emphasis on arterial improvement in urban areas. A meeting to discuss this problem more fully was held in October 1958 at Syracuse University. This meeting, the National Conference on Highways and Urban Redevelopment (more commo...