ATIS (Advanced Traveller Information Systems) are aimed to provide information on traffic conditions to travellers so that they can keep their travel decisions with less uncertainty. The effects of ATIS can be analysed with respect to two interrelated levels: at a disaggregated/individual level, considering the effect that the information has on travel choices of a given traveller; at a network level, considering that the individual reactions to information interact each the other (and with the congestion phenomenon) leading to actual traffic patterns. The investigation of the effects of information on travellers’ behaviours/choices at a disaggregated/individual level is a pre-requisite for any analysis on the impacts of ATIS on traffic networks. It is widely expected that travellers’ behaviour can be strongly influenced by the ability of the information system in making accurate estimations of the actual travel times they will experience on the network. The paper is addressed to investigate the effect of the information accuracy (and of its dispersion over time) on travelers’ concordance. A Stated Preference experiment has been made; the final objective has been to estimated the models addressed to simulate the respondents reaction to ATIS by considering the effect of information accuracy on travelers’ concordance. The discrete choice models based on random utility theory were developed, switching and holding approaches were investigated, homoscedastic and heteroscedastic models were estimated.
Investigating and modelling the effects of information accuracy on travellers' compliance with ATIS approach.
DE LUCA, STEFANO;DI PACE, ROBERTA
2011-01-01
Abstract
ATIS (Advanced Traveller Information Systems) are aimed to provide information on traffic conditions to travellers so that they can keep their travel decisions with less uncertainty. The effects of ATIS can be analysed with respect to two interrelated levels: at a disaggregated/individual level, considering the effect that the information has on travel choices of a given traveller; at a network level, considering that the individual reactions to information interact each the other (and with the congestion phenomenon) leading to actual traffic patterns. The investigation of the effects of information on travellers’ behaviours/choices at a disaggregated/individual level is a pre-requisite for any analysis on the impacts of ATIS on traffic networks. It is widely expected that travellers’ behaviour can be strongly influenced by the ability of the information system in making accurate estimations of the actual travel times they will experience on the network. The paper is addressed to investigate the effect of the information accuracy (and of its dispersion over time) on travelers’ concordance. A Stated Preference experiment has been made; the final objective has been to estimated the models addressed to simulate the respondents reaction to ATIS by considering the effect of information accuracy on travelers’ concordance. The discrete choice models based on random utility theory were developed, switching and holding approaches were investigated, homoscedastic and heteroscedastic models were estimated.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
