关键词: 城市交通, 小区开放, 广义出行费用, 交通分配, 小区开放对策, 畅通可靠性

Abstract: The opening of internal roads in residential areas can increase the density and accessibility of urban road network, and alleviate urban road congestion. In order to obtain a traffic assignment model suitable for an open community, a survey with questionnaire for travelers is conducted. It is found that the traveler mainly considers the two factors of travel time and time volatility. Based on this, the CONTRAM cost function is improved to obtain the generalized travel cost applicable to the opening of the community, which takes the influence of unblocked reliability on route choice into account. Combined with the traveler selection criterion after the opening of the community, the stochastic user optimal model (SUO)considering generalized travel cost is established, and the method of successive averages (MSA) algorithm is used to solve the model, so as to obtain more accurate traffic flow. Through investigation and analysis, suggestions for internal planning after the opening of the community are proposed from the aspects of cross-section of the open road, the radius and widening of the entrance and exit, and the traffic organization of the entrance and exit.

Key words: urban traffic, community opening, general travel cost, traffic distribution, community open planning, unblocked reliability