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原文传递 Rise-Time Requirements for High-Intensity Discharge Headlamps

题名：	Rise-Time Requirements for High-Intensity Discharge Headlamps
作者：	Sivak, M.; Flannagan, M. J.; Schoettle, B.; Nakata, Y.
关键词：	Headlamp brightness; Night driving; Visual degradation; Tunnels; Beam switching; Recommendations; Data collection
摘要：	This study had two objectives. The first, more general objective was to provide background information about the maximum rise time that should be allowed for high-intensity discharge headlamps. The second, more specific objective was to evaluate whether SAE's current, rather stringent, recommendations should be relaxed or retained. To achieve these objectives, the authors considered several scenarios in which having early illumination is potentially of consequence. The scenarios included turning on the headlamps when starting to drive, turning on the headlamps when entering a dark tunnel, and switching between beams. New empirical data collected for this study included actual delays between turning on the headlamps at night and starting to drive, and rise and falloff functions of tungsten-halogen low beams and high beams.
总页数：	24p
报告类型：	科技报告