The study was designed to investigate further a difference in discomfort glare produced by tungsten-halogen (TH) and high-intensity discharge (HID) headlamps that the authors had found in a previous experiment. In a static field setup, 36 subjects, 24 in a younger group and 12 in an older group, made de Boer ratings of discomfort glare for TH and HID lamps. The lighting conditions were similar to those seen while driving on a dark, two-lane road when glare from an oncoming car is encountered. The results replicated the difference between TH and HID lamps that the authors observed in the earlier study, and indicated that the difference is not reduced by several manipulations of context and experience that the authors introduced in the present study. Analysis of subjects' discomfort ratings indicated that when TH and HID lamps produce equal discomfort glare, the tungsten-halogen lamps produce more photopic lux at the eye of the observer. The magnitude of the difference was not affected by the type of headlamp (TH or HID) used on the car in which observers sat while viewing the glare stimuli, nor by whether the TH and HID lamps were presented in the context of headlamps that had been filtered to produce strongly saturated colors.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Discomfort Glare from High-Intensity Discharge Headlamps: Effects of Context and Experience


    Contributors:
    M. J. Flannagan (author) / M. Sivak (author) / D. S. Battle (author) / T. Sato (author) / E. C. Traube (author)

    Publication date :

    1993


    Size :

    32 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Field Study of Discomfort Glare from High-Intensity Discharge Headlamps

    M. J. Flannagan / M. Sivak / A. W. Gellatly et al. | NTIS | 1992


    Disability and discomfort glare of headlamps

    Locher, Jürgen / Kley, Franziska | Tema Archive | 2009


    Traffic Safety Aspects of High-Intensity Discharge Headlamps; Discomfort Glare and Direction Indicator Conspicuity

    Alferdinck, J. W. A. M. / Applied Vision Association / Egonomics Society et al. | British Library Conference Proceedings | 1996


    Discomfort Glare Ratings of Swiveling HID Headlamps

    Green, Charles A. / Hankey, Jon / Larsen, Michael et al. | SAE Technical Papers | 2004


    Discomfort glare ratings of swiveling HID headlamps

    McLaughlin,S. / Hankey,J. / Green,C.A. et al. | Automotive engineering | 2004