This analytical study examined the potential benefits of applying two embodiments of adaptive lighting to the U.S. and European low-beam patterns: curve lighting that involves shifting the beam horizontally into the curve, and motorway lighting that involves shifting the beam vertically upward. The curve lighting simulations paired 240-m radius left and right curves with a horizontal shift of 10 Grad, and BO-m radius curves with a horizontal beam shift of 15 Grad. The motorway lighting simulations involved upward aim shifts of 0.25 Grad and 0.5 Grad. For both curve and motorway lighting, changes in both seeing and glare illuminance were considered. Market-weighted model year 2000 U.S. and European beam patterns were used. We conclude that curve lighting, as simulated here, would substantially improve seeing performance on curves for both types of beams. On right curves (but not on left curves) there would be an increase in disability glare for oncoming traffic. (Because there will not always be an opposing vehicle, disability effects will be somewhat less frequent than the visibility benefits, which will apply to every curve.) No major discomfort-glare problems would be expected. Although the shifted U.S. beams performed slightly better overall than the shifted European beams, the main difference in performance is between the shifted and nominally aimed beams. Motorway lighting, as simulated here, would also substantially improve seeing performance, with the benefits already present at an upward shift of 0.25 Grad. Because the increases in glare illuminance would be minor, and because motorways often incorporate median barriers or wide separations between lanes of opposing traffic, we do not expect substantial problems with increased glare. The European beams benefit more from this embodiment of motorway lighting than do the U.S. beams. (This is the case because under nominal aim the European beams provide less visibility illuminance and their vertical gradient is steeper.) Nevertheless, the nominally aimed U.S. beams tend to outperform the European beams shifted upward 0.25 Grad.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Benefits of applying adaptive headlighting to the current U.S. and European low-beam patterns


    Weitere Titelangaben:

    Vorteile in der Anwednung von adaptiven Schweinwerfern bei aktuellen US amerikanischen und europäischen Abblendlichtmustern


    Beteiligte:
    Sivak, M. (Autor:in) / Flannagan, M. (Autor:in) / Schoettle, B. (Autor:in) / Nakata, Y. (Autor:in)


    Erscheinungsdatum :

    2002


    Format / Umfang :

    13 Seiten, 3 Bilder, 4 Tabellen, 17 Quellen




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Benefits of applying adaptive headlighting to the current US and European low-beam patterns

    Sivak,M. / Flannagan,M.J. / Schoettle,B. et al. | Kraftfahrwesen | 2002


    Benefits of Applying Adaptive Headlighting to the Current U.S. and European Low-Beam Patterns

    Schoettle, Brandon / Sivak, Michael / Flannagan, Michael J. et al. | SAE Technical Papers | 2002



    2002-01-0524 Benefits of Applying Adaptive Headlighting to the Current U.S. and European Low-Beam Patterns

    Sivak, M. / Flannagan, M. J. / Schoettle, B. et al. | British Library Conference Proceedings | 2002