| This is the second of two special issues on traveler behavior in networks, following an International Workshop on Behavior in Networks held during July 2004 in Seoul, Korea that acted as a forum for the exchange of ideas, knowledge and experience among overseas and local practitioners and researchers. In the first special issue, six papers have been selected, in which various kinds of traveler behavior in transportation networks have been presented by Lee et al. (2005), Chen and Ji (2005), Nam et al. (2005), Lim et al. (2005), Wong et al. (2005) and Asakura and Iryo (2005). Lee et al. (2005) have considered a multi-step ahead prediction algorithm of link travel speeds using a Kalman filtering technique in order to calculate a dynamic shortest path. Chen and Ji (2005) have examined three definitions of optimality for finding the optimal path under an uncertain environment. Nam et al. (2005) have examined a mode choice decision by considering not only travel time but also reliability of its modes. Lim et al. (2005) have considered the continuous network design problem under a stochastic environment. Wong et al. (2005) have considered the micro-searching behavior for urban taxi services. Asakura and Iryo (2005) have focused on tracking travelers' data using mobile phone for monitoring and analyzing individual travel behavior.
The expansion of transportation networks and the emergence of new technologies have generated an urgent need for advanced models and solution algorithms so as to provide better understanding of the traveler behavior on networks in response to various changes. This special issue on "Behavior in Networks (II)" is a collection of another six selected papers presented at the International Workshop on Behavior in Networks held on 22nd - 23rd July, 2004. The workshop placed greater emphasis on discussions of how new models and advanced methods can be used for giving better insights on travel behaviors in transportation networks particularly in view of the recent advancement of technologies. The workshop brought together experts in a behavior side as well as a transportation network side worldwide to discuss both recent research and future directions in this important field. The selected papers of this special issue cover the important aspects of behavior in networks to enhance the realism of modeling in transport.
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