Highlights An original framework for large-scale data collection, processing, and traffic safety analysis. Built on top of recent advances in computer vision and surrogate safety analysis. Leverages automation and large quantities of microscopic data. Suited for microscopic traffic flow modelling, behaviour studies, and proactive road safety analysis. The steps of the methodology are illustrated with examples and a sample analysis of roundabouts.

    Abstract Due to the complexity and pervasiveness of transportation in daily life, the use and combination of larger data sets and data streams promises smarter roads and a better understanding of our transportation needs and environment. For this purpose, ITS systems are steadily being rolled out, providing a wealth of information, and transitionary technologies, such as computer vision applied to low-cost surveillance or consumer cameras, are already leading the way. This paper presents, in detail, a practical framework for implementation of an automated, high-resolution, video-based traffic-analysis system, particularly geared towards researchers for behavioural studies and road safety analysis, or practitioners for traffic flow model validation. This system collects large amounts of microscopic traffic flow data from ordinary traffic using CCTV and consumer-grade video cameras and provides the tools for conducting basic traffic flow analyses as well as more advanced, pro-active safety and behaviour studies. This paper demonstrates the process step-by-step, illustrated with examples, and applies the methodology to a case study of a large and detailed study of roundabouts (nearly 80,000 motor vehicles tracked up to 30 times per second driving through a roundabout). In addition to providing a rich set of behavioural data about Time-to-Collision and gap times at nearly 40 roundabout weaving zones, some data validation is performed using the standard Measure of Tracking Accuracy with results in the 85–95% range.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Large-scale automated proactive road safety analysis using video data


    Contributors:


    Publication date :

    2015-04-06


    Size :

    17 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Proactive road safety programs

    Middleton, G. / Australian Road Research Board | British Library Conference Proceedings | 1994


    Automated Analysis of Road Safety with Video Data

    Saunier, Nicolas | Online Contents | 2007


    Automated Analysis of Road Safety with Video Data

    Saunier, Nicolas / Sayed, Tarek | Transportation Research Record | 2007


    Proactive assessment of road curve safety using floating car data: An exploratory study

    Jiří Ambros / Jaroslav Altmann / Chris Jurewicz et al. | DOAJ | 2019

    Free access