Dynamic user equilibria in StreamLine

摘要: StreamLine is a dynamic traffic assignment framework in OmniTRANS, model that developed by Omnitrans International. tries to determine user equilibrium (DUE). In this research DUE defined as follows: ‘An arises when for each route choice moment, OD pair, the flow unit costs on utilised routes are equal minimum path cost at corresponding point time’. The goal of investigate which extent able and look changes due parameter StreamLine. This done designing test networks StreamLine, running some simulations with different conditions, analysing results these simulations. Whether can be determined, depends method how determines fractions during simulation. When PCL used, it not possible deterministic equilibrium, since always small part demand assigned route. theory, series all-or-nothing assignments. However, usage an elicits problems MaDAM, propagation makes impossible (for designed research) reach realistic DUE. Unrealistic situations arise emptying network, large density differences near merge nodes, (or demand) link abruptly. These probably prevented doing adaptations model. Hereafter, parameters varied. length interval influences accuracy results. shorter interval, more development will be, but there iterations needed before converged. analysis, became clear tau, kappa nue do influence quite small. Kappa than tau. It effects larger complex network used. During unrealistic occurred oscillation effect, means fraction distribution simulation time stable, exceeding jam links. It recommended make model. To prevent observed problems, anticipation term MaDAM must changed, calculate based average speeds instead densities, calculated exceeds density.