A study of future headlamp design requirements based on the predicted trends in vehicles, drivers and traffic to 1990 shows the need for improvements beyond those obtainable from current, normal, unpolarized types, particularly if road speeds above 55 mph are again authorized. A cost-benefit analysis of the nationwide adoption of polarized headlighting by 1990 shows benefits, in the avoidance of nighttime accidents, in the range of 2.5 to 3.8 to 1 over the costs of implementing polarization. An on-the-road field test with twenty average drivers and ten vehicles equipped with polarized headlights, showed that distances at which low reflectivity roadside targets could be detected improved with increased polarized light output from the headlamps (higher transmission polarizers) but were relativly little affected by analyzer (viewer) transmission characteristics. (Hannebauer)


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Headlight requirements in 1990 - cost-benefits and minifield trial of polarized headlights


    Weitere Titelangaben:

    Anforderungen an Fahrzeugscheinwerfer im Jahr 1990. Kosten-Nutzen-Analyse und Feldtest von Scheinwerfern mit polarisiertem Licht


    Beteiligte:
    Hemion, R.H. (Autor:in) / Hull, R.W. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1976


    Format / Umfang :

    130 Seiten


    Medientyp :

    Report


    Format :

    Print


    Sprache :

    Englisch





    HALOGEN INCANDESCENT BULB FOR VEHICLE HEADLIGHTS AND VEHICLE HEADLIGHT

    CHO DONG JIN | Europäisches Patentamt | 2017

    Freier Zugriff

    Polarized light for auto headlights

    Chubb, Jr., L.W. | Engineering Index Backfile | 1950


    The requirements of automobile headlights

    Engineering Index Backfile | 1918


    Polarized light and its application in automobile headlights

    Petit, H. | Engineering Index Backfile | 1937