The effects of ATIS on transportation systems: theoretical analysis and numerical applications

Gennaro Nicola Bifulco · Fulvio Simonelli

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Transportation Planning and Optimization Traffic control and management Traffic Prediction and Management Techniques

Abstract

In this paper some of the inconsistencies and limitations of other models in the simulation of the effects of ATIS (Advanced Traveller Information Systems) will be discussed, with particular regard to the impact of pre-trip information on the day-to-day dynamics of transportation systems. An innovative model will be proposed, where the compliance of travellers to ATIS will be considered to be elastic and explicitly modelled; it will be considered both variable within the whole dynamic process and dependent on the accuracy of the information. For the sake of simplicity, a fixed O/D demand will be considered and the effects of ATIS will be taken into account only on route choices. It will be shown that in most cases ATlS cannot be used to optimise the performances of the traffic network (system optimum); rather, travellers are compliant to information only if supplied according to user optimum. The main role of ATIS in recurrent traffic conditions will be shown to be the stabilisation of the transport systems. The first section will introduce the motivations of the proposed model and how they have been addressed in literature, moreover it will anticipate most of the innovative characteristic of the proposed model, as well as the expected accuracy of the results. In the second section the model will be formalised as a dynamic process, which includes explicit simulation of compliance. In the third section the result of some numerical experiments, related to different information strategies, will be presented; moreover, some theoretical analysis will be carried out by determining the stability domain for the dynamic process in presence of information. For the covering abstract see ITRD E129315.

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1997Day-to-day evolution of network flows under real-time information and reactive signal control 2003Willingness to pay for travel information 2002Simultaneous determination of the equilibrium market penetration and compliance rate of advanced traveler information systems 1993Non-recurrent congestion: How big is the problem? Are traveler information systems the solution?2002A methodology for sustainable traveler information services 2003Modeling advanced traveler information services: static versus dynamic paradigms 2001Modeling user adoption of advanced traveler information systems: dynamic evolution and stationary equilibrium 1991A simple model for route guidance benefits

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