MOTIVATION
Statistics show that the risk of accidents at night increases by a factor of 2 to 4 [1, 2]. Good light not only creates a feeling of safety, but headlamps are the main contributors to orientation in nighttime traffic. Particularly since the introduction of xenon and LED headlamps, visibility distances during night-time drives have improved considerably.
In addition to the pure measurement technique for luminous flux and illuminance, the need for a practical evaluation of the safety improvement arose. In 2011, the International Commission on Illumination (CIE) introduced a rating system TC4-45 for headlamps that can objectively evaluate the quality of illumination. Since then, this document has provided an established and precise evaluation system within the circle of experts. The weak point of this evaluation system is the high complexity of individual data, which makes a simple and clear evaluation difficult.
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OBJECTIVE ASSESSMENT OF THE SAFETY CONTRIBUTION OF TODAY'S AUTOMOTIVE HEADLAMPS
Good lighting makes a major contribution to road safety. In 2011, the International Commission on Illumination (CIE) presented an evaluation system for headlamps that can objectively assess the quality of illumination and glare limitation. New light sources like LEDs and lighting functions (glare-free high beam, partial high beam) have been available for several years, so that an extension of the proven CIE method is necessary, which takes into account, among other things, changed switch-on and service lives of new lighting functions and represents a generally understandable evaluation system. An evaluation system presented in the following by the Technische Uni versität Darmstadt, which was developed by an encompassing expert commission, is intended to provide representative data and enable an objective evaluation of headlamp performance.
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