01128627

Component

Real-time information plays an important role in travelers’ routing choices in an uncertain network by enabling online adaptation to revealed traffic conditions. The quality of the information affects its effectiveness. Usually there are some limitations in the information provided to the travelers, spatially, temporally or both. In this paper, the authors introduce three variants of an optimal adaptive routing problem with partial online information problem: global information with time lag, global pre-trip information and radio information on a subset of links without time lag. A generic description of online information is provided. An exact algorithm is designed for the optimal routing problem in stochastic time-dependent networks with partial online information and specializations required for each of the three variants are given. A test example is conducted to computationally study the value of information. The work in this paper is potentially of interest to traveler information systems evaluation and design.

01120148

09-1315

English

21p

2009

Transportation Research Board 88th Annual Meeting

DVD

Figures (3) ; References (29) ; Tables (2)

Information technology; Real time information; Route choice; Routes and routing; Time dependence; Travel surveys; Traveler information and communication systems; Travelers; Uncertainty

Traffic conditions

Highways; Planning and Forecasting; I72: Traffic and Transport Planning

Transportation Research Board Annual Meeting 2009 Paper #09-1315

TRIS, TRB

Jan 30 2009 5:33PM