This study proposed a bilevel optimization model for the network signal timing design problem by considering the linkflows reflected by the trip-chain route choice behaviors of road users. The bilevel programming mode...This study proposed a bilevel optimization model for the network signal timing design problem by considering the linkflows reflected by the trip-chain route choice behaviors of road users. The bilevel programming model is formulated based on theinteractions between signal timing control and trip-chain behavior, and a solution algorithm by combining variational inequalitysensitivity analysis, the generalized inverse matrix method, and a gradient projection approach revised for trip-chain user equilibriumis developed for the transportation design problem. The performance of the developed model framework was verified throughnumerical analysis under different test scenarios.展开更多
This study developed a user equilibrium traffic assignment model based on trip-chains with flexible activity scheduling order and derived the corresponding optimality conditions. We based on the gradient projection me...This study developed a user equilibrium traffic assignment model based on trip-chains with flexible activity scheduling order and derived the corresponding optimality conditions. We based on the gradient projection method to develop a solution algorithm, the accuracy of which was verified using the test network of UTown. This model could be used to estimate the transportation demands with and without activities scheduling restriction between OD (origin-destination) pairs based on trip-chains, as well as based on trips. Thus, the proposed model is more generalization than conventional trip based or trip-chain based traffic assignment models.展开更多
文摘This study proposed a bilevel optimization model for the network signal timing design problem by considering the linkflows reflected by the trip-chain route choice behaviors of road users. The bilevel programming model is formulated based on theinteractions between signal timing control and trip-chain behavior, and a solution algorithm by combining variational inequalitysensitivity analysis, the generalized inverse matrix method, and a gradient projection approach revised for trip-chain user equilibriumis developed for the transportation design problem. The performance of the developed model framework was verified throughnumerical analysis under different test scenarios.
文摘This study developed a user equilibrium traffic assignment model based on trip-chains with flexible activity scheduling order and derived the corresponding optimality conditions. We based on the gradient projection method to develop a solution algorithm, the accuracy of which was verified using the test network of UTown. This model could be used to estimate the transportation demands with and without activities scheduling restriction between OD (origin-destination) pairs based on trip-chains, as well as based on trips. Thus, the proposed model is more generalization than conventional trip based or trip-chain based traffic assignment models.