Virginia Tech Transportation Institute (VTTI): Recent submissions
Now showing items 1-20 of 585
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Countermeasures to Reduce Truck-Mounted Attenuator (TMA) Crashes: A State-of-the-Art Review
(MDPI, 2022-05-09)To support worker and driver safety, this study conducted a comprehensive literature review to identify methods of enhancing TMA visibility, improving work zone configurations, and ensuring worker safety. To increase TMA ... -
Analysis of Car Cut-ins Between Trucks Based on Existing Naturalistic Driving Data
(National Surface Transportation Safety Center for Excellence, 2022-03-21)For successful operation of cooperative adaptive cruise control, the participating vehicles follow certain operational criteria. For truck platooning, the participating trucks are required to maintain a minimum inter-vehicular ... -
Developing and Field Testing a Green Light Optimal Speed Advisory System for Buses
(MDPI, 2022-02-17)In this study, a Green Light Optimal Speed Advisory (GLOSA) system for buses (B-GLOSA) was developed. The proposed B-GLOSA system was implemented on diesel buses, and field tested to validate and quantify the potential ... -
VTTI Annual Report, 2021 Fiscal Year
(Virginia Tech, 2021)Learn more about VTTI's accomplishments during fiscal year 2021. -
Quantifying the effect of roadway, driver, vehicle, and location characteristics on the frequency of longitudinal and lateral accelerations
(Pergamon-Elsevier, 2021-10-01)The purpose of this study is to understand and quantify the simultaneous effects of roadway speed category, driver age, driver gender, vehicle class, and location on the rates of longitudinal and lateral acceleration epochs. ... -
Perceived Driving Difficulty, Negative Affect, and Emotion Dysregulation in Self-Identified Autistic Emerging Drivers
(Frontiers, 2022-01-31)Driving is central to adult independence and autonomy; yet most autistic young adults do not acquire driver’s licenses. It is important to understand barriers to achieving this milestone for autistic adults. Differences ... -
Developing a Hydrogen Fuel Cell Vehicle (HFCV) Energy Consumption Model for Transportation Applications
(MDPI, 2022-01-12)This paper presents a simple hydrogen fuel cell vehicle (HFCV) energy consumption model. Simple fuel/energy consumption models have been developed and employed to estimate the energy and environmental impacts of various ... -
Reversing Poor Safety Records: Identifying Best Practices to Improve Fleet Safety
(MDPI, 2021-12-24)Commercial motor vehicle safety is of utmost importance, as crashes involving commercial motor vehicles often result in significant property damage, injuries, fatalities, and financial loss for fleets. However, fleet ... -
A Feasible Solution for Rebalancing Large-Scale Bike Sharing Systems
(MDPI, 2021-12-04)City bikes and bike-sharing systems (BSSs) are one solution to the last mile problem. BSSs guarantee equity by presenting affordable alternative transportation means for low-income households. These systems feature a ... -
Evaluation of Various Surface Cleaning Techniques Inside Tunnels on Pavement Skid Resistance
(MDPI, 2021-09-28)A request started a comprehensive investigation on the Skid Resistance (SR) inside a highway tunnel in Madrid, Spain, to determine methods that will improve or maintain the SR above the minimum required level (60), after ... -
Examining senior drivers' attitudes toward advanced driver assistance systems after naturalistic exposure
(Oxford University Press, 2020-01-01)Background and Objectives: The increasing number of senior drivers may introduce new road risks due to age-related declines in physical and cognitive abilities. Advanced driver assistance systems (ADAS) have been proposed ... -
What Are the Restraint Practices, Preferences, and Experiences When Australian Parents Travel with Their Children in a Rideshare Vehicle?
(MDPI, 2021-08-25)This study aimed to explore the preferences, experiences and restraint practices of Australian parents travelling with their children in rideshare vehicles. Six hundred and thirty-one participants completed an online survey ... -
Decision-adjusted driver risk predictive models using kinematics information
(2021-06)Accurate prediction of driving risk is challenging due to the rarity of crashes and individual driver heterogeneity. One promising direction of tackling this challenge is to take advantage of telematics data, increasingly ... -
Predicting Vehicle Trajectories at Intersections using Advanced Machine Learning Techniques
(SAFE-D: Safety Through Disruption National University Transportation Center, 2021-05)The ability to accurately predict vehicle trajectories is essential in infrastructure-based safety systems that aim to identify critical events such as near-crash situations and traffic violations. In a connected environment, ... -
Data Mining Twitter to Improve Automated Vehicle Safety
(SAFE-D: Safety Through Disruption National University Transportation Center, 2021-02)Automated vehicle (AV) technologies may significantly improve driving safety, but only if they are widely adopted and used appropriately. Adoption and appropriate use are influenced by user expectations, which are increasingly ... -
Development of a Connected Smart Vest for Improved Roadside Work Zone Safety
(SAFE-D: Safety Through Disruption National University Transportation Center, 2021-04)Roadside work zones (WZs) present imminent safety threats for roadway workers as well as passing motorists. In 2016, 764 fatalities occurred in WZs in the United States due to motor vehicle traffic crashes. A number of ... -
Reference Machine Vision for ADAS Functions
(SAFE-D: Safety Through Disruption National University Transportation Center, 2021-05)Studies have shown that fatalities due to unintentional roadway departures can be significantly reduced if Lane Departure Warning and Lane Keep Assist systems are used effectively. However, these systems have not been ... -
Design and Development of an Automated Truck Mounted Attenuator
(SAFE-D: Safety Through Disruption National University Transportation Center, 2021-05)Truck-Mounted Attenuators (TMAs) are energy-absorbing devices added to heavy shadow vehicles to provide a mobile barrier that protects work crews from errant vehicles entering active work zones. While the TMA is designed ... -
Alcohol Intoxication Checklist: A Naturalistic Approach
(National Surface Transportation Safety Center for Excellence, 2021-07-16)This effort sought to determine the prevalence of particular visual and behavioral indicators for alcohol intoxication using data collected in the Strategic Highway Research Program 2 Naturalistic Driving Study (SHRP 2 ...
