The objective was to determine the extent that transient visual adaptation (TVA) affects drivers' detection of targets along partially lighted freeway interchanges. The study expanded a preliminary task on TVA described in publication FHWA-RD-88-223. Twenty-five subjects drove 10 trials on an entrance and an exit ramp. Lighting was manipulated to provide trials in darkness, and with one, two, three, and four luminaires lighted along each ramp. The same drivers returned for a second session of 10 trials, when refractors were replaced with sharp cut-off luminaires (low glare). The drivers pressed a button on a hand-held switch when they detected the 7-in by 7-in (17.8-cm by 17.8-cm) gray targets placed on the shoulder at 350 ft (106.75 m) or 475 ft (144.88 m) downstream of the final ramp luminaire. The vehicle computer recorded distances between subjects and targets at the instant of detection.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Trade-Off between Delineation and Lighting of Freeway Interchanges: Investigation of Transient Visual Adaptation


    Beteiligte:
    R. S. Hostetter (Autor:in) / R. G. Carter (Autor:in) / G. W. Dauber (Autor:in)

    Erscheinungsdatum :

    1993


    Format / Umfang :

    30 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Safety Analysis of Freeway Interchanges

    He, Yulong / Sun, Xiaoduan / Coakley, Richard C. | ASCE | 2008


    Safety Analysis of Freeway Interchanges

    He, Y. / Sun, X. / Coakley, R.C. et al. | British Library Conference Proceedings | 2008


    Evaluation of Express Lane Effectiveness in Freeway to Freeway Interchanges

    J. W. Hanks / K. Barnes / J. M. Mounce | NTIS | 1992


    Some guides in selection of freeway interchanges

    Tutt, P.R. | Engineering Index Backfile | 1958


    Freeway Operations/Design: A Tale of Two Interchanges

    Schirmer, G. E. / Jackson, R. I. / American Society of Civil Engineers et al. | British Library Conference Proceedings | 1995