Arterial travel time estimation: Revisiting the classical procedure

Ashish Bhaskar, Edward Chung, André Gilles Dumont

Research output: Unpublished conference presentation (presented paper, abstract, poster)Conference presentation (not published in journal/proceeding/book)Academic researchpeer-review

Abstract

Travel time is an important network performance measure and it quantifies congestion in a manner easily understood by all transport users. In urban networks, travel time estimation is challenging due to number of reasons such as, fluctuations in traffic flow due to traffic signals, significant flow to/from mid link sinks/sources, etc. The classical analytical procedure utilizes cumulative plots at upstream and downstream locations for estimating travel time between the two locations. In this paper, we discuss about the issues and challenges with classical analytical procedure such as its vulnerability to non conservation of flow between the two locations. The complexity with respect to exit movement specific travel time is discussed. Recently, we have developed a methodology utilising classical procedure to estimate average travel time and its statistic on urban links (Bhaskar, Chung et al. 2010). Where, detector, signal and probe vehicle data is fused. In this paper we extend the methodology for route travel time estimation and test its performance using simulation. The originality is defining cumulative plots for each exit turning movement utilising historical database which is self updated after each estimation. The performance is also compared with a method solely based on probe (Probe-only). The performance of the proposed methodology has been found insensitive to different route flow, with average accuracy of more than 94% given a probe per estimation interval which is more than 5% increment in accuracy with respect to Probe-only method.

Original languageEnglish
Publication statusPublished - 1 Jan 2014
Externally publishedYes
Event34th Australasian Transport Research Forum, ATRF 2011 - Adelaide, Australia
Duration: 28 Sep 201130 Sep 2011

Conference

Conference34th Australasian Transport Research Forum, ATRF 2011
CountryAustralia
CityAdelaide
Period28/09/1130/09/11

ASJC Scopus subject areas

  • Transportation

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