Now showing items 10431-10440 of 10478
Trends in fatal U.S. crashes in darkness: 1990 to 2006
(University of Michigan, Ann Arbor, Transportation Research Institute, 2008-05)
Fatal crash trends in the United States between 1990 and 2006 were examined for changes in the ratio of crashes in darkness to crashes in daylight to determine whether recent improvements in vehicle forward headlighting ...
Benefits of applying adaptive lighting to the U.S. and European low-beam patterns
(University of Michigan, Ann Arbor, Transportation Research Institute, 2001)
This analytical study examined the potential benefits of applying two embodiments of adaptive lighting to the U.S. and European low-beam patterns: curve lighting that involves shifting the beam horizontally into the curve, ...
The effects of infrared-reflective treatment on thermal comfort during transient conditions
(University of Michigan, Ann Arbor, Transportation Research Institute, 2003)
Four otherwise identical sedans had an infrared-reflective (IRR) film applied to differing sections of the vehicles’ glazing. An experiment was performed using two independent variables: air conditioning output (two different ...
Analysis of Body Movement Patterns and Subjective Discomfort Ratings in Long-Duration Sitting
(University of Michigan, Ann Arbor, Transportation Research Institute, 2020-01)
A laboratory study was conducted to evaluate the hypothesis that discomfort in long-duration sitting is associated with more frequent posture changes. Two nominally identical production automobile driver seats were obtained ...
Road departure crash warning system field operational test: methodology and results. Volume 1: technical report
(University of Michigan, Ann Arbor, Transportation Research Institute, 2006)
This report summarizes results from the Intelligent Vehicle Initiative (IVI) Road Departure Crash Warning System Field
Operational Test (RDCW FOT) project. This project was conducted under a cooperative agreement between ...
Effects of the spectra of innovative sources in signal lamps
(University of Michigan, Ann Arbor, Transportation Research Institute, 2000)
Various new light sources, such as light emitting diodes (LEDs) and neon, have recently been adopted for signal lamps, or are being considered for such use. These sources expand the range of spectral power distributions ...
Visual effects of blue-tinted tungsten-halogen headlamp bulbs
(University of Michigan, Ann Arbor, Transportation Research Institute, 2001)
Manufacturers have recently introduced several types of tungsten-halogen headlamp bulbs that have been filtered to produce bluish tints. Some informal reports suggest that the differences in spectral power distribution due ...
Seasonal variations in conspicuity of high-visibility garments
(University of Michigan, Ann Arbor, Transportation Research Institute, 2007-11)
A naturalistic, daytime field study was conducted to investigate the effects of garment color, the amount of background material, driver age, and season on the conspicuity of high-visibility safety garments. Subjects drove ...
Road departure crash warning system field operational test: methodology and results. Volume 2: appendices
(University of Michigan, Ann Arbor, Transportation Research Institute, 2006)
This report summarizes results from the Intelligent Vehicle Initiative (IVI) Road Departure Crash Warning System Field
Operational Test (RDCW FOT) project. This project was conducted under a cooperative agreement between ...
Analysis of the Field Effectiveness of General Motors Production Active Safety and Advanced Headlighting Systems
(University of Michigan, Ann Arbor, Transportation Research Institute, 2019-07)
The safety system content of over 3.7 million vehicles across 20 different GM Model Year 2013-2017 vehicles were
provided by GM to UMTRI to examine the field effectiveness of 15 Active Safety and Advanced Headlighting ...