Use of travel demand satisfaction to assess road network reliability

被引：35

作者：

Heydecker, B. G.

Lam, William H. K.

Zhang, Ning

机构：

[1] UCL, Ctr Transport Studies, London WC1E 6BT, England

[2] Hong Kong Polytech Univ, Dept Civil & Struct Engn, Kowloon, Hong Kong, Peoples R China

[3] Beijing Univ Aeronaut & Astronaut, Sch Management, Beijing 100083, Peoples R China

来源：

TRANSPORTMETRICA | 2007年 / 3卷 / 02期

基金：

中国国家自然科学基金;

关键词：

network reliability; demand uncertainty; degradable network; network equilibrium; sensitivity analysis;

D O I：

10.1080/18128600708685670

中图分类号：

U [交通运输];

学科分类号：

08 ; 0823 ;

摘要：

A new concept of network reliability is introduced to assess the performance of the road network. It is referred to as the travel demand satisfaction reliability (DSR). In order to understand this new concept, the attributes to recurrent travel demand are firstly investigated for the analysis of road network reliability. The latent travel demand (LTD) is then distinguished and estimated by elastic travel demand functions. The ratio of the equilibrium travel demand and LTD can be used to ascertain the extent of satisfying and revealing the latent travel demand (DSI), which is affected by both the uncertainty of the network degradation and of the recurrent travel demand. The DSR is defined as the probability that the road network can accommodate a given DSI. The DSR can be extended to include other reliability measures such as travel time reliability under certain conditions. In order to facilitate the presentation of the essential ideas, simple examples are employed for discussion together with mathematical formulation.

引用

页码：139 / 171

页数：33

共 26 条

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