Induced Travel Demand: Measuring The Contribution Of Additional Lane Miles On The Increase In U.S. Vehicle Miles Traveled From 1980 To 2019,
2022
University of Kentucky
Induced Travel Demand: Measuring The Contribution Of Additional Lane Miles On The Increase In U.S. Vehicle Miles Traveled From 1980 To 2019, Brandon Ivanchak
Theses and Dissertations--Civil Engineering
Induced travel demand is the effect of increasing the amount of vehicle miles traveled because of an increase in roadway capacity. It is explained by the idea that increasing capacity makes driving on those roads more desirable, thereby causing more people to use them. In1962, Robert Downs postulated that “On urban commuter expressways, peak hour traffic congestion rises to meet maximum capacity,” referring to this as the law of peak hour traffic congestion. Since then, there have been ongoing debates about the effectiveness and environmental impact of roadway expansion projects, and efforts to quantify induced demand to inform those debates. …
Protocols And Architecture For Privacy-Preserving Authentication And Secure Message Dissemination In Vehicular Ad Hoc Networks,
2022
University of Kentucky
Protocols And Architecture For Privacy-Preserving Authentication And Secure Message Dissemination In Vehicular Ad Hoc Networks, Shafika Showkat Moni
Theses and Dissertations--Computer Science
The rapid development in the automotive industry and wireless communication technologies have enhanced the popularity of Vehicular ad hoc networks (VANETs). Today, the automobile industry is developing sophisticated sensors that can provide a wide range of assistive features, including accident avoidance, automatic lane tracking, semi-autonomous driving, suggested lane changes, and more. VANETs can provide drivers a safer and more comfortable driving experience, as well as many other useful services by leveraging such technological advancements. Even though this networking technology enables smart and autonomous driving, it also introduces a plethora of attack vectors. However, the main issues to be sorted out …
Definition And Detection Of Hypervulnerabilities Using A Framework For Assessing Port Resilience,
2022
Old Dominion University
Definition And Detection Of Hypervulnerabilities Using A Framework For Assessing Port Resilience, Katherine Smith, Rafael Diaz, Yuzhong Shen, Francesco Longo
VMASC Publications
Long term plans for maritime ports are identifying investments that will increase their capacity while decreasing their environmental footprint and operating costs. These changes are leading to increases in complexity at a time when leaner practices are driving investments to become more strategic. As such, this work proposes a generalized definition that allows a system or entity to be classified as exceedingly vulnerable by comparing it to other entities. This definition is developed from a set of definitions gathered from disparate fields. From this definition grounded in theory, the initial rules for complex system implementation are developed and demonstrated on …
Development Of Active Learning Data Fixing Tool With Visual Analytics To Enhance Traffic Near-Miss Diagnosis,
2022
University of Central Florida
Development Of Active Learning Data Fixing Tool With Visual Analytics To Enhance Traffic Near-Miss Diagnosis, Jinyu Pei
Electronic Theses and Dissertations, 2020-2023
This study proposes a software to upgrade the UCF SST's Automated Roadway Conflicts Identification System (ARCIS), a pixel-to-pixel manner automated safety diagnostics and conflict identification system. The system is developed to extract vehicles' trajectories and traffic parameters using unmanned aerial vehicles (UAV) video and utilizing deep learning techniques. A user-friendly tool to improve rapid system development with active-learning, data analysis, and visualization techniques is introduced, which is capable of traffic safety near-miss diagnostics based on the ARCIS output. Multiple approaches are used to enhance the system performance, including video stabilization, object filtering, stitching multiple videos, vehicle detection and tracing. In …
Comparative Analysis Of Bridge Abutment Types,
2022
The University of Akron
Comparative Analysis Of Bridge Abutment Types, David Fell
Williams Honors College, Honors Research Projects
This project was developed to serve as a brief overview of design practices and considerations in the selection of highway bridge abutment types. This involved a review of literature in the form of reviewing national design guides and department of transportation (DOT) requirements from both US DOTs and international DOTs. The abutment types covered in this research included conventional reinforced concrete abutments with bearings, integral abutments, and semi-integral abutments. This research focused solely on highway bridge abutments, particularly on Ohio Department of Transportation design requirements due to their extensive use of semi-integral abutments. Superstructure elements and geometric requirements are primary …
Improving Traffic Efficiency At Tallmadge Circle Considering Autonomous Vehicles,
2022
The University of Akron
Improving Traffic Efficiency At Tallmadge Circle Considering Autonomous Vehicles, Benjamin Mallinak
Williams Honors College, Honors Research Projects
In a set of behavioral recommendations outlined by the National Highway Traffic Safety Administration (NHTSA), navigating a roundabout is listed as one of twenty-eight regularly required abilities that a highly automated vehicle must be able to complete. As autonomous vehicle technology is developed, refined, and proven to meet these ability expectations, roundabouts and traffic circles that experience high volumes of traffic are anticipated to benefit from an improved efficiency of traffic flow. For Tallmadge Circle and other similar traffic control configurations, the degree of improvement will be dependent on the steps taken to utilize the capabilities of the autonomous vehicles …
Sustainability And Environmentally Friendly Methods To Travel Over Waterways,
2022
The University of Akron
Sustainability And Environmentally Friendly Methods To Travel Over Waterways, Kendall Kubus
Williams Honors College, Honors Research Projects
Throughout daily traveling, the main structures used are bridges and tunnels. Bridges are used as overpasses over valleys, canyons, and areas that require a large amount of dirt fill to bring the roadway up to the proper grade. Tunnels are underpasses through mountains, under city limits and waterways. The benefits of building a bridge structure is little preparation goes into earth-work and the transportation of aggregate materials. There is some time spent testing surrounding soil to determine the process that will need to occur for foundation preparations in bridge columns. Options for foundation include different types of drilled shafts, caissons, …
Cruser Place Green Streets Plan,
2022
Virginia Commonwealth University
Cruser Place Green Streets Plan, Neal Friedman
Master of Urban and Regional Planning Capstone Projects
Combining green and complete street design techniques leads to multiple environmental, social and economic benefits that often enhance each other's effectiveness. In urban areas confronting increased pressures of sea level rise, green streets, which incorporate landscaped features or vegetative areas to manage stormwater within the right of way, can be crucial pieces of pedestrian oriented urban design and multimodal planning frameworks that consider and plan for diverse, complementary transportation options. This plan works with the Colonial Place and Riverview Civic League as well as the Norfolk Preservation Collective to come up with green street design recommendations in order to strengthen …
Towards An Artificial Intelligence Based Decision Support System To Evaluate Various Transit Projects,
2022
CUNY City College
Towards An Artificial Intelligence Based Decision Support System To Evaluate Various Transit Projects, Patricio F. Vicuna
Dissertations and Theses
This dissertation addressed a subset of the Transit Network Design Problem (Transit-NDP), where the main evaluation parameter is the impact of various transit projects – Bus Lines, Tram, Light Rail, Rail – on the Network Travel Time (NTT) of the vehicles. The NTT is estimated using the static four-step travel demand model (trip generation, trip distribution, modal split, and traffic assignment). A set of five metaheuristic models were developed and implemented for this specific Transit-NDP, namely, Simulated Annealing (SA)-VISUM, Simulated Annealing-Random Forest Regression Model (SA-RF), Tabu Search (TS)-Random Forest (TS-RF), SA-RF-TS-VISUM, SA-RF-VISUM. These models were evaluated using two test networks …
Impact Of Covid-19 On Aviation-Wildlife Strikes Across Europe,
2022
German Aerospace Center (DLR)
Impact Of Covid-19 On Aviation-Wildlife Strikes Across Europe, Isabel C. Metz, Marta Giordano, Dionysios Ntampakis, Marianna Moira, Anneke Hamann, Rosanne Blijleven, Jürgen J. Ebert, Alessandro Montemaggiori
Human–Wildlife Interactions
Collisions between aircraft and wildlife (i.e., wildlife strikes) pose a serious threat toward the safety of aircraft, its crew, and passengers. The effects of COVID-19 related travel restrictions on wildlife strikes are unknown. With this study, we aim to address this information gap by assessing the changes of wildlife hazard management performance across European airports during the lockdown period (e.g., period of reduced operations and borders closure in spring 2020). We also sought to raise awareness of the importance of wildlife strike prevention in times of reduced operations. The objective of our study was to compare wildlife strike data before …
Exploring The Spatially Heterogeneous Effects Of The Built Environment On Bike-Sharing Usage During The Covid-19 Pandemic,
2022
Old Dominion University
Exploring The Spatially Heterogeneous Effects Of The Built Environment On Bike-Sharing Usage During The Covid-19 Pandemic, Hongtai Yang, Zishuo Guo, Guocong Zhai, Linchuan Yang, Jinghai Huo
Civil & Environmental Engineering Faculty Publications
Bike-sharing holds promise for available and healthy mobility services during COVID-19 where bike sharing users can make trips with lower health concerns due to social distancing compared to the restricted transportation modes such as public transit and ridesharing services. Leveraging the trip data of the Divvy bike-sharing system in Chicago, this study explores spatially heterogeneous effects of built environment on bike-sharing usage under the pandemic. Results show that the average weekly ridership declined by 52.04%. To account for the spatially heterogeneous relationship between the built environment and the ridership, the geographically weighted regression (GWR) model and the semiparametric GWR (S-GWR) …
Investigating Changes In Trends Of Traffic Crashes Due To Covid-19 Pandemic In Florida’S Freeways,
2022
University of North Florida
Investigating Changes In Trends Of Traffic Crashes Due To Covid-19 Pandemic In Florida’S Freeways, Ntagwanko Kisabanzira
UNF Graduate Theses and Dissertations
The COVID-19 pandemic outbreak caused a shift in traffic patterns that have in turn influenced a change in traffic accident trends. Due to stay-at-home orders that were issued across the United States, transportation agencies reported low traffic demands on highways after the pandemic outbreak. Low traffic volumes are associated with relatively higher speeds that are linked to increased severity of crashes. Several states reported an increase in fatal crashes after the outbreak of the COVID-19 pandemic. This paper evaluates the traffic crash trends on three interstates in Florida (I-10, I-75, and I-95) and sheds light on what happened before, during, …
Engineering Countermeasures For Left Turns At Signalized Intersections: A Review,
2022
Old Dominion University
Engineering Countermeasures For Left Turns At Signalized Intersections: A Review, Siby Samuel, Amandeep Singh, Yusuke Yamani
Psychology Faculty Publications
Left turn crashes can impact the safety of the drivers due to the speed and angle at which they occur. Left turns are specifically reported to affect older drivers more than the other types of crashes. This paper provides a review of the existing engineering countermeasures that have been evaluated to improve driver safety at left turns. Twenty- eight studies on left turn signal displays (protected left turns, flashing yellow arrow, and digital countdown timers), intersection geometry (offset left turn lanes, diverging diamond interchange, roundabouts, exit lanes for left turn, left turn bay extension, and contraflow left turn lanes), and …
Air Passenger Demand Forecast Through The Use Of Artificial Neural Network Algorithms,
2022
Universidad de Granada
Air Passenger Demand Forecast Through The Use Of Artificial Neural Network Algorithms, Juan Gerardo Muros Anguita, Oscar Díaz Olariaga
International Journal of Aviation, Aeronautics, and Aerospace
Airport planning depends to a large extent on the levels of activity that are anticipated. In order to plan facilities and infrastructures of an airport system and to be able to satisfy future needs, it is essential to predict the level and distribution of demand. This document presents a short- and medium-term forecast of the demand for air passengers carried out through a specific case study (Colombia), in which the impact of the pandemic period due to COVID-19 on air traffic was taken into account. To make the forecast, an algorithm that implements techniques based on Artificial Neural Networks (ANN) …
Analysis Of Shared Micromobility Related Crashes: Case Study Of Florida,
2022
University of North Florida
Analysis Of Shared Micromobility Related Crashes: Case Study Of Florida, Enock E. Mwambeleko
UNF Graduate Theses and Dissertations
United States cities have adopted shared micromobility systems to mitigate problems facing the transportation industry. The State of Florida has at least 13 established shared micromobility systems. Identifying the factors influencing the injury severity is critical for improving the safe operations of micromobility devices. This study investigates the leading factors affecting the injury severity for micromobility related crashes in Florida. The study investigates 463 crashes involving e-scooters or e-bikes between 2018 and 2022 in Florida, extracted by the Text-Mining approach from the SignalFour Analytics database. Analyses consisted of exploratory data analysis to discover trends and patterns. First, using the Pedestrian …
Understanding Perceptions Of Vulnerable Roadway Users On Autonomous Vehicles,
2022
West Virginia University
Understanding Perceptions Of Vulnerable Roadway Users On Autonomous Vehicles, Md Tawhidur Rahman
Graduate Theses, Dissertations, and Problem Reports (ETD)
Public perceptions have been playing an important role in the development of autonomous vehicle (AV) technology. Besides AV and non-AV users, the perceptions of vulnerable roadway users are critical, as AVs will become a part of multimodal transportation system. Pedestrians and bicyclists are among the vulnerable groups of roadway users, as they are relatively unprotected compared to the occupants of AVs or non-AVs. Although AV’s capability to monitor other vehicles has been documented in many studies, there are concerns about AV’s capability in monitoring pedestrians and bicyclists. The overarching goal of this dissertation is to investigate the perceptions of pedestrians …
Crash Injury Severity Prediction With Artificial Neural Networks,
2021
New Jersey Institute of Technology
Crash Injury Severity Prediction With Artificial Neural Networks, Rima Abisaad
Dissertations
Motor vehicle crashes are one of our nation's most serious social, economic and health issues. They are the leading cause of death among children and young adults, killing approximately 1.35 million people each year. Providing a safe and efficient transportation system is the primary goal of transportation engineering and planning. To help reduce traffic fatalities and injuries on roadways, crash prediction models are used to forecast the injury severity of potential crashes and apply precautionary countermeasures accordingly. Most of these models are reactive as they use historical crash data to categorize crash-related factors. Recently, advancements have been made in developing …
Research On High-Rap Mixtures With Rejuvenator - Field Implementation,
2021
University of Nebraska-Lincoln
Research On High-Rap Mixtures With Rejuvenator - Field Implementation, Nitish R. Bastola, Mahdieh Khedmati, Hamzeh Haghshenas
Nebraska Department of Transportation: Research Reports
The use of Rejuvenating Agents (RAs), as Recycled Asphalt Pavement (RAP) modifiers, has been increasing over the past years. However, the field performance of asphalt mixtures containing high-RAP materials and modified with RAs has raised some concerns regarding the long-term performance of RAs. This study evaluated the laboratory and field performance of high-RAP mixtures with and without bio-oil RA. Three sets of plant-produced specimens were collected: 1) laboratory-compacted; 2) field-compacted and cored after paving; and 3) field-compacted and cored after one and two years. The Hamburg Wheel Tracking (HWT) test was used to evaluate the specimens' resistance to rutting and …
Estimation Of The Service Life Of Span Structures In Predicting The Durability Of Reinforced Concrete Bridges,
2021
Tashkent State transport University (Tashkent, Uzbekistan)
Estimation Of The Service Life Of Span Structures In Predicting The Durability Of Reinforced Concrete Bridges, Sh.B. Akhmedov, Kh. Almenov, Sh.Sh. Shojalilov, Sh.Sh. Safarov
The Scientific Journal of Vehicles and Roads
In recent years, on the roads of Uzbekistan and other countries, there has been a dangerous increase in various damages in the operated superstructures, caused by an increase in the service life and traffic intensity of vehicles and cargo tension.
Indicators Of Determining The Productivity Of Motor Graders Under Natural Conditions,
2021
Tashkent State transport University (Tashkent, Uzbekistan)
Indicators Of Determining The Productivity Of Motor Graders Under Natural Conditions, N.R. Aslonov, S.S. Yusubjonov, S.M. Mirkholiqov
The Scientific Journal of Vehicles and Roads
In the article, Motor Graders are self-propelled machines that level and shape the ground, and their equipment consists of a fully rotating blade overturner, located between the rear and front bridges of the pneumatic wheel drive.
