Highlights ► We present a method for estimating missing traffic volumes on an urban road network in real-time. ► Estimates of missing data are based on traffic equilibrium principles. ► The approach was developed to place the time-consuming computation in an offline phase. ► The objective is to have a real-time phase which is scalable to full city-wide deployments. ► The value of real-time data increases with variability and the proportion of links missing data.

    Abstract This paper presents a method for estimating missing real-time traffic volumes on a road network using both historical and real-time traffic data. The method was developed to address urban transportation networks where a non-negligible subset of the network links do not have real-time link volumes, and where that data is needed to populate other real-time traffic analytics. Computation is split between an offline calibration and a real-time estimation phase. The offline phase determines link-to-link splitting probabilities for traffic flow propagation that are subsequently used in real-time estimation. The real-time procedure uses current traffic data and is efficient enough to scale to full city-wide deployments. Simulation results on a medium-sized test network demonstrate the accuracy of the method and its robustness to missing data and variability in the data that is available. For traffic demands with a coefficient of variation as high as 40%, and a real-time feed in which as much as 60% of links lack data, we find the percentage root mean square error of link volume estimates ranges from 3.9% to 18.6%. We observe that the use of real-time data can reduce this error by as much as 20%.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Real-time traffic estimation using data expansion


    Contributors:

    Published in:

    Publication date :

    2011-05-16


    Size :

    18 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Real-time traffic estimation using data expansion

    Lederman, Roger | Online Contents | 2011


    Queue-length estimation using real-time traffic data

    Amini, Zahra / Pedarsani, Ramtin / Skabardonis, Alexander et al. | IEEE | 2016


    Real time vehicular traffic estimation using cellular infrastructure

    Chaturvedi, Manish / Srivastava, Sanjay | IEEE | 2013


    Real-time travel time estimation using macroscopic traffic flow models

    Kachroo, P. / Ozbay, K. / Hobeika, A.G. | IEEE | 2001


    Real-Time Travel Time Estimation Using Macroscopic Traffic Flow Models

    Kachroo, P. / Ozbay, K. / Hobeika, A. G. et al. | British Library Conference Proceedings | 2001