Now showing items 1-10 of 41
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 ...
Splash and Spray Assessment Tool Development Program: Final Report
(Virginia Tech. Virginia Tech Transportation Institute, 2014-10-07)
The effects of vehicle splash and spray are well known to motorists who have driven in wet weather conditions. Research suggests that splash and spray contribute to a small but measurable portion of road traffic accidents ...
Wet Night Visibility of Pavement Markings
(Virginia Center for Transportation Innovation and Research, 2004-10)
This report describes an investigation into the performance of pavement markings in wet night conditions. The performance of a typical pavement marking will degrade when it gets wet. This is a result of the flooding of the ...
Improvement of Conspicuity of Trailblazing Signs: Phase III-Evaluation of Fluorescent Colors
(Virginia Center for Transportation Innovation and Research, 2001-02)
This report represents a Phase III effort to design and evaluate a new sign design for incident route trailblazing. The colors evaluated were fluorescent coral, fluorescent purple, fluorescent yellow-green, and non-fluorescent ...
Fatigue Life Characterization of Superpave Mixtures at the Virginia Smart Road
(Virginia Center for Transportation Innovation and Research, 2005-08)
Laboratory fatigue testing was performed on six Superpave HMA mixtures in use at the Virginia Smart Road. Evaluation of the applied strain and resulting fatigue life was performed to fit regressions to predict the fatigue ...
Researcher Dictionary for Safety Critical Event Video Reduction Data
(Virginia Tech. Virginia Tech Transportation Institute, 2015-10-06)
This data dictionary describes the video reduction variables available in the Second Strategic Highway Research Program (SHRP 2) Naturalistic Driving Study data set for use by the research community. The data dictionary ...
Infrastructure Pavement Assessment & Management Applications Enabled by the Connected Vehicles Environment – Proof-of-Concept
(Research and Innovative Technology Administration, 2015-09-30)
The objective of this project was to develop prototypes and conduct a field test of system level applications of a connected vehicle pavement condition measurement system. This allowed the research team to: (1) investigate ...
Automated Vehicle Crash Rate Comparison Using Naturalistic Data
(Virginia Tech Transportation Institute, 2016-01-08)
This study assessed driving risk for the United States nationally and for the Google Self-Driving Car project. Driving safety on public roads was examined in three ways. The total crash rates for the Self-Driving Car and ...
Naturalistic Driving Study: Technical Coordination and Quality Control (SHRP 2 Report S2-S06-RW-1)
(Transportation Research Board, 2015)
Potential Reduction in Large Truck and Bus Traffic Fatalities and Injuries Using Lytx's DriveCam Program
(Lytx; Virginia Tech, 2014-05)
This study quantitatively evaluated the potential safety benefits of equipping all United States heavy trucks and buses in the U.S. with Lytx™ Inc.’s DriveCam® program. Heavy trucks and buses include the following vehicle ...