详情

原文传递 Market-Weighted Trends in the Design Attributes of Headlamps in the U.S.

题名：	Market-Weighted Trends in the Design Attributes of Headlamps in the U.S.
作者：	schoettle, b. sivak, m. takenobu, n.
关键词：	automotive lighting systems, prevalence, low beams, high beams, optics, lens, trends, visual aiming, optical aiming, light source, market
摘要：	The report provides updated information regarding the market-weighted prevalence of various headlamp design attributes in the U.S. and a summary of recent trends for these design attributes. The main findings were as follows: (1) there was a general transition from dual-filament light sources in 1997 to single-filament sources in 2007; (2) the preferred optics changed from lens-based in 1997 to mostly reflector-based optics in 2007; and (3) while mechanical aim was the most frequently specified aiming method in 1997, the 2007 sample made nearly exclusive use of visual/optical aiming (with visual/optical right side as the most common specific type). / Supplementary Notes: Sponsored by Industry Affiliation Program for Human Factors in Transportation Safety, Ann Arbor, MI. / Availability Note: Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
总页数：	u0725；20p
报告类型：	科技报告