Abstract: This paper analyses a market equilibrium model for differential multi road with stochastic choice between one OD pairs.The multinomial logit model is used as the probabilities of the stochastic choice and the supply of differentiated roads is subjected to the total demand function of all roads.A modified method of successive average is proposed and an illustrative example is employed effectively in this paper

Key words: traffic volume, multi road with stochastic choice, multinomial logit model, market equilibrium

摘要： 笔者分析了一个OD对之间具有多条路线条件下，交通流对路线随机选择情况下的出行市场均衡模型。该 模型是以交通总需求为约束条件，以多项式Logit模型为随机函数，并以每条路线的供给函数为基础而构造的。最 后，笔者用启发式算法中的逐步平均步长法(MSA)进行了实例验算，证明了均衡模型及其解法的有效性

关键词: 交通流, 多路径随机选择, 多项式Logit模型, 均衡