The sharp variation of illumination at the entrance and exit of highway tunnels causes difficulty in the visual adaptation of drivers and may even lead to accidents. Therefore, ascertaining the light and dark adaption time is a basic task to promote the safety of tunnel transportation. Took 26 typical tunnels as experimental settings and used the IViewX HED Laptop eye tracker system, the light and dark adaption of drivers in highway tunnels had been experimentally investigated. The relation between pupil area and its variation velocity was presented based on many experimental data and the ratio k of the variation velocity to its critical variation velocity was used to evaluate the visual load in highway tunnels and thus ascertained the visual adaption time, whereby the relation between tunnel length and visual adaptation time was thus obtained. Experimental results indicated that the dark and light adaption time of tunnels was less than 23 s and 13 s for medium and long length tunnels, respectively.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Light and Dark Adaption Times Based on Pupil Area Variation at Entrance and Exit Areas of Highway Tunnels


    Contributors:


    Publication date :

    2014-02-14


    Size :

    52014-01-01 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown



    Highway Entrance-Exit Spacing in Rapid Urbanization Areas

    Chen, Zhongyi / Xu, Jianwei / Dai, Weiwei et al. | ASCE | 2020


    Emergency Exit Guidance for U.S. Highway Tunnels

    Higgins, Laura / Rozyckie, Stephen / Miles, Jeffrey D. et al. | Transportation Research Record | 2016


    Safety Evaluation of Highway Tunnel-Entrance Illuminance Transition Based on Eye-Pupil Changes

    Zhigang Du / Hongliang Wan / Chaozhong Wu et al. | DOAJ | 2014

    Free access

    Emergency Exit Signs and Marking Systems for Highway Tunnels

    Higgins L. / Carlson P. / Miles J. et al. | NTIS | 2015


    ZigBee technology-based highway entrance and exit wireless light-emitting marking system and control method

    GONG SHAOJIE / GAO PENGFEI / ZHAO XIN | European Patent Office | 2020

    Free access