Now showing items 15221-15227 of 15227
Lane markings in night driving: a review of past research and of the present situation
(University of Michigan, Ann Arbor, Transportation Research Institute, 1998)
One of the basic driver tasks is to follow the road. In daytime driving, when the visibility of the road in clear weather is unobstructed, this is normally not a problem. However, when driving at night on dark roads with ...
Historical development and current effectiveness of rear lighting systems
(University of Michigan, Ann Arbor, Transportation Research Institute, 1999)
This report presents a historical account of the development of rear lighting systems. The account is based partly on a comprehensive review of the available documented sources.
Various details of both technical developments ...
The effects of hydrophobic treatment of the driver-side window and rearview mirror on distance judgement
(University of Michigan, Ann Arbor, Transportation Research Institute, 1999)
This study investigated the effects of hydrophobic treatment on distance estimation under conditions of simulated rain and wind when applied to the driver-side window and driver-side exterior rearview mirror. The dependent ...
Do changes in voltage result in proportional changes throughout headlamp beam patterns?
(University of Michigan, Ann Arbor, Transportation Research Institute, 1998)
This study evaluated the effects of voltage changes on beam patterns of low-beam headlamps. Seven different types of filament lamps were tested. The voltages used were
12.0, 12.8, and 13.5 V. The photometry was performed ...
The influence of stimulus duration on discomfort glare for persons with and without visual correction
(University of Michigan, Ann Arbor, Transportation Research Institute, 1997)
This laboratory study investigated the effects of stimulus duration and the nature of visual correction on discomfort glare. The experimental setup simulated a nighttime driving situation with an opposing glare source at ...
Quantitative comparisons of factors influencing the performance of low-beam headlamps
(University of Michigan, Ann Arbor, Transportation Research Institute, 1998)
This study compared the quantitative influence of a variety of factors on the
performance of low-beam headlamps. The following factors were included: vertical aim, horizontal aim, mounting height, lateral separation, lens ...
The influence of lens haze on headlamp beam patterns
(University of Michigan, Ann Arbor, Transportation Research Institute, 1998)
This study investigated changes in headlamp beam patterns as a function of the level of haze in sheets of plastic materials that were inserted in front of either a U.S. or a
European low-beam headlamp. The level of haze ...