关键词: 交通工程, 可逆车道, 双层规划, 网络设计

Abstract:

An optimal layout of the reversible lane is proposed to deal with the significant change of the relationship between the supply and demand of the urban road.A bi-level programming model is established in which transportation management section at the upper level disposes the reversible lane to minimize the total system cost while transportation users at the lower level follow stochastic user equilibrium assignment principle to select travel routes.For the traffic demand,three kinds of vehicles with different travel characteristics are considered:social vehicles,buses and emergency vehicles.For the network representation,the intersection is taken into consideration both in calculating the travel time and in optimizing the layout of the reversible lane.A solution algorithm is also developed,in which the upper level problem are solved by the particle swarm optimization approach and the lower level problem are solved by the diagonalization algorithm combined with method of successive averages.The overall travel time of the system is calculated to be reduced by 20%,a proof of the feasibility of the reversible lane design.

Key words: traffic engineering;reversible lane;bi level programming;network design