Virginia Tech Transportation Institute (VTTI): Recent submissions
Now showing items 1-20 of 460
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Feasibility Study for Using Piezoelectric-Based Weigh-In-Motion (WIM) System on Public Roadway
(MDPI, 2019-07-31)Weigh-in-Motion system has been the primary selection of U.S. government agencies as the weighing enforcement for decades to protect the road pavement. In recent years, the number of trucks has increased by about 40% and ... -
Identifying High-Risk Intersections for Walking and Bicycling Using Multiple Data Sources in the City of San Diego
(2019-06-16)Over the last decade, demand for active transportation modes such as walking and bicycling has increased. While it is desirable to provide high levels of safety for these eco-friendly modes of travel, unfortunately, the ... -
VTTI 25
(Virginia Tech Transportation Institute, 2013)This booklet, published in 2013, commemorated 25 years of transportation research at the Virginia Tech Transportation Institute (VTTI). -
Work Zone Lighting’s Effect on Driver Visibility
(National Surface Transportation Safety Center for Excellence, 2019-06-05)Portable light towers are a significant source of glare to motorists entering a work zone. Although existing research has evaluated the effect of light tower orientation on visibility and glare, the effects of factors like ... -
A Novel Decentralized Game-Theoretic Adaptive Traffic Signal Controller: Large-Scale Testing
(MDPI, 2019-05-17)This paper presents a novel de-centralized flexible phasing scheme, cycle-free, adaptive traffic signal controller using a Nash bargaining game-theoretic framework. The Nash bargaining algorithm optimizes the traffic signal ... -
Steady-State Car-Following Time Gaps: An Empirical Study Using Naturalistic Driving Data
(Hindawi Publishing Corp, 2019-05-13)The time gap is defined as the time difference between the rear of a vehicle and the front of its follower, which affects both safety and the saturation flow rate of a roadway segment. In this study, naturalistic driving ... -
Effective Strategies to Improve Safety: Case Studies of Commercial Motor Carrier Safety Advancement
(National Surface Transportation Safety Center for Excellence, 2019-04-30)Although previous research has documented safety improvement strategies, many carriers may not have real-world data and/or information on the strategies that other carriers have successfully used to improve safety. This ... -
Vehicle Operating Speed on Urban Arterial Roadways
(Safety Through Disruption (SAFE-D) National University Transportation Center, 2019-01)This research explored (1) the relationship between suburban vehicle operating speed and roadway characteristics,especially the presence of bicyclists and (2) whether crowdsourced speed data could be used to estimate ... -
Pedestrian Visibility in Roundabouts: Naturalistic Study of Driver Eye-Glance Behavior
(National Surface Transportation Safety Center for Excellence, 2019-04-16)Roundabouts increase safety, but their safety effects on vulnerable road users are not as great as the safety effects for motor-vehicle drivers. Additionally, many motorists fail to yield to pedestrians at intersections ... -
Safety Perceptions of Transportation Network Companies (TNCs) by the Blind and Visually Impaired
(Safety Through Disruption (SAFE-D) National University Transportation Center, 2018-10)For individuals that are visually impaired, access to safe and reliable transportation can be a significant challenge. The limited menu of mobility options can culminate in a reduced quality of life and more difficulty ... -
Street Noise Relationship to Bicycling Road User Safety
(Safety Through Disruption (SAFE-D) National University Transportation Center, 2018-12)Vulnerable road users, such as bicyclists, experience road noise directly. This study explored the relationship between bicycle crash risk and street-level road noise as measured in Austin, Texas and the Washington, D.C. ... -
Sources and Mitigation of Bias in Big Data for Transportation Safety
(Safety Through Disruption (SAFE-D) National University Transportation Center, 2018-11)Emerging big data resources and practices provide opportunities to improve transportation safety planning and outcomes. However, researchers and practitioners recognize that big data includes biases in who the data represents ... -
Driver Visual Behavior While Using Adaptive Cruise Control on Commercial Motor Vehicles
(National Surface Transportation Safety Center for Excellence, 2019-03-25)This study compared whether commercial motor vehicle drivers spent less time looking at the roadway while cruise control was engaged. The trucks in the study were equipped with commercially available systems that provide ... -
Commercial Motor Vehicle Operator Fatigue Detection Technology Catalog and Review
(National Surface Transportation Safety Center for Excellence, 2019-02-21)According to the National Academies of Science, Engineering, and Medicine, fatigue plays a role in up to 20% of fatal commercial motor vehicle (CMV) crashes. Because fatigue is difficult to self-assess, the use of fatigue ... -
National Surface Transportation Safety Center for Excellence Annual Report, January - December 2012
(Virginia Tech, 2012)This annual report documents the center's research and positive impact on transportation safety in 2012. -
National Surface Transportation Safety Center for Excellence Annual Report, January-December 2011
(Virginia Tech, 2011)This annual report documents the center's research and positive impact on transportation safety in 2011. -
National Surface Transportation Safety Center for Excellence Annual Report, January - December 2010
(Virginia Tech, 2010)This annual report documents the center's research and positive impact on transportation safety in 2010. -
Transportation Research Today, Vol. 1, No. 3., 2014
(Virginia Tech, 2014)NSTSCE’s third quarterly newsletter puts the spotlight on motorcycle safety. -
Transportation Research Today, Vol. 1, No. 4, 2014
(Virginia Tech, 2014)NSTSCE’s fourth quarterly newsletter puts the spotlight on medication use in commercial vehicle drivers. -
Transportation Research Today, Vol. 1, No. 1, 2014
(Virginia Tech, 2014)NSTSCE’s first quarterly newsletter puts the spotlight on older drivers and the transportation challenges and mobility issues they face maintaining an active lifestyle.
