Now showing items 10401-10410 of 10483
The use of parking and auxiliary lamps for traffic sign illumination
(University of Michigan, Ann Arbor, Transportation Research Institute, 2000)
In 1997, the U.S. government introduced an option of having headlamps labeled as visually/optically aimable (VOA). To be so labeled, the vertical gradient of the light output needs to meet certain minimum requirements. A ...
Field measurements of direct and rearview-mirror glare from low-beam headlamps
(University of Michigan, Ann Arbor, Transportation Research Institute, 2001)
This study measured direct and rearview-mirror glare illuminances produced by low-beam headlamps in a sample of 22 passenger vehicles. The glare illuminances were measured for 12 common glare situations that were defined ...
Mirror-mounted turn signals and traffic safety
(University of Michigan, Ann Arbor, Transportation Research Institute, 2006-11)
Previous studies have shown that mirror-mounted turn signals have advantages over conventional turn signals in terms of their geometric visibility and conspicuity in several important situations. This study was designed ...
Improving traffic safety : conceptual considerations for successful action.
(University of Michigan, Ann Arbor, Transportation Research Institute, 2008-04)
In the early stages of motorization, it did not take rigorous scientific research to achieve major improvements in traffic safety. Instead, early traffic-safety countermeasures were often based exclusively on common sense. ...
Analysis of the Field Effectiveness of General Motors Model Year 2013-2020 Advanced Driver Assistance System Features
(UMTRI, 2022-03)
Over 10.9 million Model Year 2013–2020 vehicles were matched to police-reported crashes from 14 states to examine the effectiveness of GM ADAS features. The quasi-induced exposure method was used, with logistic regression ...
Trucks involved in fatal accidents codebook 2005
(University of Michigan, Ann Arbor, Transportation Research Institute, 2007-11)
This report provides documentation for UMTRI’s file of Trucks Involved in Fatal Accidents (TIFA), 2005, including distributions of the code values for each variable in the file. The 2005 TIFA file is
a census of all medium ...
High-beam and low-beam headlighting patterns in the U.S. and Europe at the turn of the millennium
(University of Michigan, Ann Arbor, Transportation Research Institute, 2001)
This study was designed to provide photometric information about current U.S. and European high- and low-beam headlamps. The sample included 20 headlamps manufactured
for use on the 20 best-selling passenger vehicles for ...
Integrated Vehicle-Based Safety System heavy truck driver-vehicle interface (DVI) specifications (final version)
(University of Michigan, Ann Arbor, Transportation Research Institute, 2007-10)
The Integrated Vehicle-Based Safety Systems (IVBSS) program is a four-year, two phase cooperative research program conducted by an industry team led by the University of Michigan Transportation Research Institute (UMTRI). ...
Engineering assessment of current and future vehicle technologies: FMVSS no. 105 hydraulic and electric brake systems, FMVSS no. 135 passenger car brake systems; final report
(University of Michigan, Ann Arbor, Transportation Research Institute, 2005-03)
This report provides a technical assessment of Federal Motor Vehicle Safety Standards (FMVSS) 105, Hydraulic and electric brake systems, and FMVSS 135, Passenger car brake systems. The review of these standards is part of ...
Trucks involved in fatal accidents factbook 2003
(University of Michigan, Ann Arbor, Transportation Research Institute, 2007-04)
This document presents aggregate statistics on trucks involved in traffic accidents in 2003. The
statistics are derived from the Trucks Involved in Fatal Accidents (TIFA) file, compiled by the
University of Michigan ...