Now showing items 1-10 of 64
Modernizing bridge safety inspection with process improvement and digital assistance
(Virginia Center for Transportation Innovation and Research, 2004-01)
This research effort was developed to record and analyze the Virginia Department of Transportation (VDOT) bridge/structure inspection processes as an aid to modernizing and automating these inspection processes through the ...
Portable Image Analysis System for Characterizing Aggregate Morphology
(Virginia Center for Transportation Innovation and Research, 2008-02-01)
In the last decade, the application of image-based evaluation of particle shape, angularity and texture has been widely researched to characterize aggregate morphology. These efforts have been driven by the knowledge that ...
Pavement Marking Visibility Requirements During Wet Night Conditions
(Virginia Center for Transportation Innovation and Research, 2006-11)
This study investigated the performance of pavement markings in wet night conditions. Typically, performance will decrease in wet conditions. The degradation is a result of flooding of the marking optics and a change in ...
Development and validation of a luminance camera: final report
(Virginia Tech. Virginia Tech Transportation Institute, 2009-02-11)
Under the sponsorship of the National Surface Transportation Safety Center for Excellence (NSTSCE), an effort was undertaken to develop a system of image capture to analyze luminance data gathered in naturalistic driving research.
Modeling 100-car safety events: a case-based approach for analyzing naturalistic driving data: final report
(Virginia Tech. Virginia Tech Transportation Institute, 2009-09-30)
This study developed an integrated framework for modeling the safety outcomes of naturalistic driving studies and addressed several critical methodological issues. The results indicate a certain level of discrepancy between ...
Using high-speed texture measurements to improve the uniformity of hot-mix asphalt
(Virginia Center for Transportation Innovation and Research, 2003-05-01)
This study introduces Virginia's efforts to apply high-speed texture measurement as a tool to improve the uniformity of hot-mix asphalt (HMA) pavements. Three approaches for detecting and quantifying HMA segregation through ...
Assessment of a Drowsy Driver Warning System for Heavy Vehicle Drivers: Final Report
(United States. National Highway Traffic Safety Administration, 2008)
Drowsiness has a globally negative impact on performance, slowing reaction time, decreasing situational awareness, and impairing judgment. A field operational test of an early prototype Drowsy Driver Warning System was ...
Truck Modeling Along Grade Sections
(Virginia Tech, 2001-05-11)
This research effort first characterizes the trucks traveling along US highways by analyzing data from Interstate 81. It is hypothesized that I-81 is typical of US highways and thus can provide some insight into typical ...
Deploying an ITS Warning System for No-Passing Zones on Two-Lane Rural Roads
(Virginia Tech, 2001-06-28)
A new safety application, as part of ITS Advanced Rural Transportation System (ARTS), has been developed to be deployed on a two-lane rural road (Route 114), in Southwest Virginia. The route segment under study is subject ...
Evaluation of Service Reliability Impacts of Traffic Signal Priority Strategies for Bus Transit
(Virginia Tech, 2002-06-03)
Recent progress in technology has facilitated the design, testing, and deployment of traffic signal priority strategies for transit buses. However, a clear consensus has not emerged regarding the evaluation of these ...