Lundi, 21 Août, 2023 - 17:00
Precipitation-induced landslides pose risks to humans through property damage, disruption of infrastructure, injury, and loss of life. These risks may be altered by climate change, as changes in vegetation cover and associated root cohesion might lead to a change in areas susceptible to landslides. We investigate this possibility through Monte Carlo simulations...
Lundi, 21 Août, 2023 - 17:00
Geohazards—such as landslides, liquefaction, rockfalls, subsidence, expansive/collapsible soils, and erosion—can pose major threats to transportation assets. Extreme weather events can also trigger and/or exacerbate geohazards, and the increasing incidence of such events is a concern in certain regions of the United States. A geohazards management...
Lundi, 21 Août, 2023 - 15:15
The objective of this project was to demonstrate and evaluate a highly efficient and economical method for evaluation of the condition of bridge decks in Alaska. The method, Aerial Infrared Thermography (Aerial IR), implements traditional infrared thermography from a fixed-wing aircraft using high resolution infrared and visual cameras. To address the objective...
Lundi, 21 Août, 2023 - 15:15
This project performed preliminary work to support use of Unmanned Aerial Vehicles (UAV)-based for bridge inspections, providing an economical and safer alternative to conventional inspection practices. The main challenge is that most existing technologies rely on general-purpose UAV platforms and there is no verified methodology for UAV-enabled bridge...
Lundi, 21 Août, 2023 - 15:00
This project develops an artificial neural network (ANN), a class of Artificial Intelligence (AI) systems, to accurately model and predict future delays at an intersection. Developing such modeling and prediction systems raises considerable data privacy concerns and it is incumbent upon municipal, state, and federal branches of government to prioritize citizens...
Mardi, 6 Juin, 2023 - 15:15
There are emerging concerns around the potential negative impact that the rapidly growing ‘gig economy’ may be having on overall road safety. The ‘gig economy’ means work done outside of the traditional employer–employee relationship, on an ‘as and when needed’ basis. The research aimed to better understand the road...
Mardi, 6 Juin, 2023 - 15:15
Researchers conducted eight large-scale laboratory tests to assess the combined impact of hot-mix asphalt (HMA) overlay mix and thickness on its performance to control reflective cracking. Bonding efficiency, flexibility, and stiffness of the HMA mix as well as overlay thickness significantly affect an overlay’s performance against reflective cracking....
Mardi, 6 Juin, 2023 - 15:15
This project focused on the evaluation of the influence of nanoadditives on the hydration kinetics, mechanical properties, and durability of concretes with and without supplementary cementitious materials (SCMs). The types of nanomaterials used in the course of this study included nano-titanium dioxide (nano-TiO2) and two forms of nanosilica. A series of...
Mardi, 6 Juin, 2023 - 15:00
The purpose of this project is to acquire a laser scanner and explore its utilities for creating digital twins of infrastructure systems to support infrastructure management. In joint with an ongoing project with NJ Transit OEM on developing an early flood warning system, the project focused on applying the laser scanning and building modeling technologies to...
Mardi, 6 Juin, 2023 - 15:00
The South Dakota Department of Transportation (SDDOT) sought to enhance its safety program by investigating different methods of evaluating completed highway safety improvement projects. As a first step, the researcher completed a comprehensive literature review, using the results to develop a state survey. Upon approval of the state survey by the project...
Lundi, 29 Mai, 2023 - 14:45
Roadsides contain promising habitat for insect pollinators, yet roadside restorations can be expensive and are rarely evaluated for effectiveness. Where do we establish pollinator-friendly revegetation to maximize benefits? How effective are current revegetation practices at providing habitat for pollinators? We address these questions with two studies. Chapter...
Lundi, 29 Mai, 2023 - 14:30
Many bridges are built without accommodations for active transportation users and only serve motorized traffic. The pedestrians and bicyclists who rely on these bridges are exposed to safety-related concerns and their access to equal employment opportunities and essential services may be hindered.
The TRB National Cooperative Highway Research Program's...
