交通信息与安全2017，Vol.35Issue(2)：16-22,34,8.DOI:10.3963/j.issn.1674-4861.2017.02.003
考虑拥堵成本的机场路网可靠性测算方法
A Model for Calculating Reliability of Airport Road Network Considering Congestion Cost
摘要
Abstract
Traditional algorithms to calculate the reliability of travel time applied in airport road network have two main problems, which are neither considering actual conditions of road network nor airport access cost of travellers.To resolve these two problems, congested-road amendment factors and cost factors are used to develop a time estimation model for travel time to an airport.A method of minimum square error sum (LSE) is proposed to validate this improved model.The road network of Nanjing airport is taken as a case study.It shows that the LSE of the improved method is 0.57 and lower than 0.03 of traditional algorithms.Therefore, the improved method is closer to actual conditions of the road network.Reliability of travel time in the road segment of Nanjing airport is predicted between 0.69 and 0.89, while that in the road network is between 0.65 and 0.78.The improved method shows that the reliability of travel time in the road network is unevenly distributed and low in the core segments.The improved method that is proposed in this paper can be used to close the gap between the traditional algorithms and actual conditions of road network.关键词
交通工程/机场路网/行程时间/可靠性/拥堵修正因子/成本因子/最小误差平方和Key words
traffic engineering/airport road network/travel time/reliability/congested-road amendment factor/cost factor/minimum square error sum分类
交通工程引用本文复制引用
贾俊华,包丹文,顾佳羽..考虑拥堵成本的机场路网可靠性测算方法[J].交通信息与安全,2017,35(2):16-22,34,8.基金项目
国家自然科学基金项目(51508274)、江苏省自然科学基金项目(BK20140821)资助 （51508274）
