Public Affairs, Public Policy and Public Administration Commons^™

Transportation Planning In Tribal Communities: From Plan Development To Implementation, Cole Grisham

PSU Transportation Seminars

Existing studies surveying transportation planners in Tribal communities have recognized two challenges: (1) that existing planning analysis tools do not always align with Tribal community context and needs, and (2) that it is not always clear what benefits planning provides to transportation project selection and delivery in Tribal communities. These challenges are outlined in a 2020 FHWA Research Needs Statement titled Making Transportation Planning Applicable in Tribal Communities.

This study, therefore, seeks to align available planning analysis tools to Tribal community needs based on a range of contextual factors, and to quantify the benefits of planning analysis in the project …

Retention Of A Diverse Construction Workforce, Maura Kelly

PSU Transportation Seminars

Having a strong pipeline of workers will be critical for ongoing efforts to improve transportation infrastructure, such as roads, highways, and bridges. This talk first provides an overview of the recruitment and retention of a diverse construction workforce in Oregon. Next are findings from research studies over the last ten years demonstrating the challenges experienced by workers on construction job sites that lead to low retention levels. The talk concludes with a discussion of several initiatives within the construction trades that have been implemented to address job site culture.

Webinar: The Impact Of Transportation-Related Barriers On Self-Perceived Physical Health Among Adults In The Us, Philip Baiden, Godfred Boateng

TREC Webinar Series

Drawing from the framework of social determinants of health, the objective of this study is to investigate the cross-sectional association between transportation-related factors and self-perceived physical health among adults in the U.S.

Data for this study were derived from the 2017 National Household Travel Survey. An analytic sample of 71,235 respondents aged 18 and 64 years was analyzed using binary logistic regression. Of the 71,235 respondents examined, 8.9% perceived their physical health to be poor. About 36% of the respondents had fewer vehicles per individuals in the household.

Controlling for the effects of other factors, respondents who had fewer vehicles …

An Assessment Of Bicycle Detection Confirmation And Countdown Devices, Christopher Monsere, Sirisha Kothuri, David S. Hurwitz

PSU Transportation Seminars

For a person on a bicycle at intersections, trail crossings, or midblock locations that are signalized, knowing that they have been detected and how long they must wait to receive a green indication is valuable information. This presentation will summarize the findings from the online survey (1,048 responses), observed behaviors (2,428 persons on bicycle), and an intercept survey ( 234 persons) to understand blue light feedback devices and countdown timers at signalized intersections.

Findings suggest that the design where the blue light was embedded in the sign was more visible to cyclists and observed by higher proportions of cyclists in …

New Mobility For All: Evaluation Of A Transportation Incentive Program For Residents Of Affordable Housing In Portland, Or, Nathan Mcneil, John Macarthur, Huijun Tan

TREC Final Reports

Low-income residents, immigrants, seniors, and people with disabilities - people who are often the most transport disadvantaged and thus stand to gain the most from tools that could reduce transportation costs and time – are often poorly served by new transportation tools and services, whether due to issues of affordability, gaps in technology adoption, unbanked populations, social or knowledge gaps, physical access, or other barriers. The research team worked with the Portland Bureau of Transportation (PBOT) to evaluate the Transportation Wallet for Residents of Affordable Housing Pilot (TWRAH). The program provided a set of transportation incentives for low-income participants including …

Turning Streets Into Housing, Adam Millard-Bell

PSU Transportation Seminars

Wide residential streets in US cities are both a contributor to homelessness and a potential strategy to provide more affordable housing. In residential neighborhoods, subdivision ordinances typically set binding standards for street width, far in excess of what is economically optimal or what private developers and residents would likely prefer. These street width standards are one contributor to high housing costs and supply restrictions, which exacerbate the housing affordability crisis in high-cost cities.

Cities can certainly reduce street widths in new development. But what about existing neighborhoods? Dr. Adam Millard-Ball proposes two strategies through which excess street space can accommodate …

Greenhouse Gas Inventory Of Transportation And Driving Habits At Gettysburg College, Flavia Soctto D'Antuono, Megan G. Wojnar

Student Publications

By tracking the overall emissions put out by a college campus, mitigation strategies can be researched to lower total emissions. This study utilized a survey for both the student body and faculty and staff members at Gettysburg College in Gettysburg, Pennsylvania. This survey allowed this study to answer three research questions; what is the total number of Scope 3 emissions at Gettysburg College, how do these findings compare to findings from 2009 and the 2016 STARS report for Gettysburg College, and if any potential mitigation strategies are welcomed by the campus community. This study examined five major driving related emission …

Analyzing Alternative Modes Of Transportation & Carbon Footprint In Gettysburg, Pennsylvania, Sean M. Gallagher, Paul C. Krakoviak

Student Publications

As millions of students embark on their journey of college, many use different forms of transportation in and around their respective areas. The aim of this study incorporates the analysis of various forms of transportation, as well as each transportation method's marginal greenhouse gas emissions and marginal cost per mile in Gettysburg, Pennsylvania. Data was collected by testing each mode of transportation on a short trip to the local Walmart. The results show that the two modes of transportation that contributed the least to greenhouse gas emissions were biking and walking. The results for other modes of transportation that constitute …

Transportation Barriers Affecting Migrant Workers In Adams County, Pennsylvania, Anna H. Bochenek, Christopher Trilleras

Student Publications

This study examines the transportation patterns and potential barriers among migrant families and workers in Adams County, Pennsylvania. The objective of this study is to determine whether barriers to transportation exist in the county, and if so, how these barriers impact the population facing them. Our study examines solutions such as more universal license policies or a potential public transportation option. To collect data and carry out our project, we distributed surveys in English and Spanish families through the Center for Public Service at Gettysburg College. We had the potential to receive responses from around 70 families, and ultimately received …

Eisenhower And The Interstate, Brian H. Berry

Student Publications

By passing the Federal Highway Act of 1956, 34th U.S. President Dwight D. Eisenhower would go down in history as the father of the American Interstate Highway System. It was Ike’s determination to execute his ‘Grand Plan’ for a modernized road network that initiated the monumental effort to produce the roads we as Americans use every day. However, today’s highway network is a far cry from what Ike had in mind when he first envisioned the plan. Congressional dissent and special interests did much to undermine the success of Ike’s ‘Grand Plan,’ forcing him to compromise significantly on the issue. …

Understanding E-Scooter Incidents Patterns In Street Network Perspective: A Case Study Of Travis County, Texas, Junfeng Jiao, Shunhua Bai, Seung Jun Choi

Research Collection College of Integrative Studies

Dockless electric scooter (E-scooters) services have emerged in the United States as an alternative form of micro transit in the past few years. With the increasing popularity of E-scooters, it is important for cities to manage their usage to create and maintain safe urban environments. However, E-scooter safety in U.S. urban environments remains unexplored due to the lack of traffic and crash data related to E-scooters. Our study objective is to better understand E-scooter crashes from a street network perspective. New parcel level street network data are obtained from Zillow and curated in Geographic Information System (GIS). We conducted local …

Improving The Performance Of Transportation Networks: A Semi-Centralized Pricing Approach, Zhiguang Cao, Hongliang Guo, Wen Song, Kaizhou Gao, Liujiang Kang, Xuexi Zhang, Qilun Wu

Research Collection School Of Computing and Information Systems

Improving the performance of transportation network is a crucial task in traffic management. In this paper, we start with a cooperative routing problem, which aims to minimize the chance of road network breakdown. To address this problem, we propose a subgradient method, which can be naturally implemented as a semi-centralized pricing approach. Particularly, each road link adopts the pricing scheme to calculate and adjust the local toll regularly, while the vehicles update their routes to minimize the toll costs by exploiting the global toll information. To prevent the potential oscillation brought by the subgradient method, we introduce a heavy-ball method …

Exploring The Relationship Between Mandatory Helmet Use Regulations And Adult Cyclists’ Behavior In California Using Hybrid Machine Learning Models, Fatemeh Davoudi Kakhki, Maria Chierichetti

Mineta Transportation Institute

In California, bike fatalities increased by 8.1% from 2015 to 2016. Even though the benefits of wearing helmets in protecting cyclists against trauma in cycling crash has been determined, the use of helmets is still limited, and there is opposition against mandatory helmet use, particularly for adults. Therefore, exploring perceptions of adult cyclists regarding mandatory helmet use is a key element in understanding cyclists’ behavior, and determining the impact of mandatory helmet use on their cycling rate. The goal of this research is to identify sociodemographic characteristics and cycling behaviors that are associated with the use and non-use of bicycle …

Design Of A Two-Echelon Freight Distribution System In Last-Mile Logistics Considering Covering Locations And Occasional Drivers, Vincent F. Yu, Panca Jodiawan, Ming-Lu Hou, Aldy Gunawan

Research Collection School Of Computing and Information Systems

This research addresses a new variant of the vehicle routing problem, called the two-echelon vehicle routing problem with time windows, covering options, and occasional drivers (2E-VRPTW-CO-OD). In this problem, two types of fleets are available to serve customers, city freighters and occasional drivers (ODs), while two delivery options are available to customers, home delivery and alternative delivery. For customers choosing the alternative delivery, their demands are delivered to one of the available covering locations for them to pick up. The objective of 2E-VRPTW-CO-OD is to minimize the total cost consisting of routing costs, connection costs, and compensations paid to ODs …

Interactive Probing Of Multivariate Time Series Prediction Models: A Case Of Freight Rate Analysis, Haonan Xu, Haotian Li, Yong Wang

Research Collection School Of Computing and Information Systems

We present an interactive probing tool to create, modify and analyze what-if scenarios for multivariate time series models. The solution is applied to freight trading, where analysts can carry out sensitivity analysis on freight rates by changing demand and supply-related econometric variables and observing their resultant effects on freight indexes. We utilize various visualization techniques to enable intuitive scenario creation, alteration, and comprehension of time series inputs and model predictions. Our tool proved to be useful to the industry practitioners, demonstrated by a case study where freight traders are given hypothetical market scenarios and successfully generated quantitative freight index projection …

Resource Capacity Requirement For Multi-Terminal Cooperation In Container Ports, Byung Kwon Lee, Mei Wan Low

Research Collection Lee Kong Chian School Of Business

Capacity sharing among neighboring terminals offer a means to meet increasing or unexpected demand for cargo-handling without additional capital investment. This study proposes a model for capacity requirement planning of major resources, such as quay cranes (QCs), storage space, and gate, in multiterminal port operations where demand is time dependent. A resource profile simulation is run to generate random events across the terminals and estimate the capacity requirement in the form of workload distributions on port resources over time-shifts. The effects on workload requirement, arising from multiterminal cooperation, are subsequently evaluated in consideration of different container flows among terminals. Experimental …

Examining The Impact Of Transportation-Related Barriers On Self-Perceived Physical Health Among Adults In The United States, Philip Baiden, Godfred O. Boateng, Stephen Mattingly, Alan Kunz Lomelin

TREC Final Reports

Objective: Drawing from the framework of social determinants of health, the objective of this paper was to investigate the crosssectional association between transportation-related factors and self-perceived physical health among adults in the U.S. while adjusting for known demographic and socioeconomic-related factors.

Methods: Data for this report were derived from the 2017 National Household Travel Survey. An analytic sample of 71,235 respondents aged 18 and 64 years was analyzed using binary logistic regression. The outcome variable examined was self perceived physical health and the main explanatory variable was a measure of household vehicle deficit.

Results: Of the 71,235 respondents examined, 8.9% …

Webinar: Data-Driven Mobility Strategies For Multimodal Transportation, Yao-Jan Wu, Abolfazl Karimpour, Xianfeng Terry Yang

TREC Webinar Series

Multimodal transportation systems (e.g., walking, cycling, automobile, public transit, etc.) are effective in increasing people’s travel flexibility, reducing congestion, and improving safety. Therefore, it is critical to understand what factors would affect people’s mode choices. With advanced technology, such as connected and automated vehicles, cities are now facing a transition from traditional urban planning to developing smart cities. To support multimodal transportation management, this study serves as a bridge to connect speed management strategies of conventional corridors to connected vehicle corridors.

The study consists of three main components. In the first component, the impact of speed management strategies along traditional …

Road Work Ahead: Using Deep Neural Networks To Estimate The Impacts Of Work Zones, Abbas Rashidi, Ali Hassandokht Mashhadi

TREC Project Briefs

Roadside construction - be it a detour, a closed lane, or a slow weave past workers and equipment - work zones impact traffic flow and travel times on a system-wide level. The ability to predict exactly what those impacts will be, and plan for them, would be a major help to both transportation agencies and road users. Funded by the National Institute for Transportation and Communities, the latest Small Starts project led by Abbas Rashidi of the University of Utah introduces a robust, deep neural network model for analyzing the automobile traffic impacts of construction zones.

Routing Policy Choice Prediction In A Stochastic Network: Recursive Model And Solution Algorithm, Tien Mai, Xinlian Yu, Song Gao, Emma Frejinger

Research Collection School Of Computing and Information Systems

We propose a Recursive Logit (STD-RL) model for routing policy choice in a stochastic time-dependent (STD) network, where a routing policy is a mapping from states to actions on which link to take next, and a state is defined by node, time and information. A routing policy encapsulates travelers’ adaptation to revealed traffic conditions when making route choices. The STD-RL model circumvents choice set generation, a procedure with known issues related to estimation and prediction. In a given state, travelers make their link choice maximizing the sum of the utility of the outgoing link and the expected maximum utility until …

Feeder Vessel Routing And Transshipment Coordination At A Congested Hub Port, Jiangang Jin, Qiang Meng, Hai Wang

Research Collection School Of Computing and Information Systems

With increasing container-shipping traffic, congestion at transshipment hub ports happens from time to time incurring longer-than-expected waiting time for vessels and loss of transshipment connections. This situation is even worse for feeder companies, due to their relatively lower berthing priority. It is essential to design the feeder vessel routes and schedules in response to hub port congestion while ensuring efficient transshipment connection with their connecting long-haul services. In this paper, we study the vessel routing and transshipment coordination problem for a feeder liner company where only limited choices of berthing time slots are available at the hub port. We proposed …

Network Modeling Of Hurricane Evacuation Using Data-Driven Demand And Incident-Induced Capacity Loss Models, Yuan Zhu, Kaan Ozbay, Kun Xie, Hong Yang, Ender Foruk Morgul

Civil & Environmental Engineering Faculty Publications

The development of a hurricane evacuation simulation model is a crucial task in emergency management and planning. Two major issues affect the reliability of an evacuation model: one is estimations of evacuation traffic based on socioeconomic characteristics, and the other is capacity change and its influence on evacuation outcome due to traffic incidents in the context of hurricanes. Both issues can impact the effectiveness of emergency planning in terms of evacuation order issuance, and evacuation route planning. The proposed research aims to investigate the demand and supply modeling in the context of hurricane evacuations. This methodology created three scenarios for …

We Are On The Way: Analysis Of On-Demand Ride-Hailing Systems, Guiyun Feng, Guangwen Kong, Zizhuo Wang

Research Collection Lee Kong Chian School Of Business

Problem definition: Recently, there has been a rapid rise of on-demand ride-hailing platforms, such as Uber and Didi, which allow passengers with smartphones to submit trip requests and match them to drivers based on their locations and drivers’ availability. This increased demand has raised questions about how such a new matching mechanism will affect the efficiency of the transportation system—in particular, whether it will help reduce passengers’ average waiting time compared with traditional street-hailing systems. Academic/practical relevance: The on-demand ride-hailing problem has gained much academic interest recently. The results we find in the ride-hailing system have a significant …

Evaluating Mobility Impacts Of Construction Work Zones On Utah Transportation System Using Machine Learning Techniques, Ali Hassandokht Mashhadi, Abbas Rashidi

TREC Final Reports

Construction work zones are inevitable parts of daily operations at roadway systems. They have a significant impact on traffic conditions and the mobility of roadway systems. The traffic impacts of work zones could significantly vary due to several interacting factors such as work zone factors (work zone location and layout, length of the closure, work zone speed, intensity, and daily active hours); traffic factors (percentage of heavy vehicles, highway speed limit, capacity, mobility, flow, density, congestion, and occupancy); road factors (number of total lanes, number of open lanes, and pavement grade and condition); temporal factors (e.g., year, season, month, weekday, …

Detecting Driver Drowsiness With Multi-Sensor Data Fusion Combined With Machine Learning, Hovannes Kulhandjian

Mineta Transportation Institute

According to the National Highway Traffic Safety Administration, in 2017 drowsy driving resulted in 50,000 injuries across 91,000 police-reported accidents, as well as almost 800 deaths. Through the application of visual and radar sensors combined with machine learning, this research developed a drowsy driver detection system aimed to prevent potentially fatal accidents. The working prototype of Advanced Driver Assistance Systems can be installed in present-day vehicles to detect drowsy drivers with over 95% accuracy. It integrates two types of visual surveillance to examine the driver for signs of drowsiness. A camera is used to monitor the driver’s eyes, mouth and …

Holistic Prediction For Public Transport Crowd Flows: A Spatio Dynamic Graph Network Approach, Bingjie He, Shukai Li, Chen Zhang, Baihua Zheng, Fugee Tsung

Research Collection School Of Computing and Information Systems

This paper targets at predicting public transport in-out crowd flows of different regions together with transit flows between them in a city. The main challenge is the complex dynamic spatial correlation of crowd flows of different regions and origin-destination (OD) paths. Different from road traffic flows whose spatial correlations mainly depend on geographical distance, public transport crowd flows significantly relate to the region’s functionality and connectivity in the public transport network. Furthermore, influenced by commuters’ time-varying travel patterns, the spatial correlations change over time. Though there exist many works focusing on either predicting in-out flows or OD transit flows of …

Optimal Scheme Of Ships’ Routeing System In The Yangtze Estuary Based On Analytical Hierarchy Process, Yixiang Zhang

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Research On Navigation Efficiency Of Lng Carriers In Caofeidian Port Area, Zhongming Xiao

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Research On Maritime Unpacking Inspection Mechanism Of Ship-Borne Dangerous Goods Containers : Take Fujian Msa As An Example, Miaolin Wang

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Analysis Of The Influence Of Beibu Gulf Port Development On Regional Economy, Hanyue Zhang

World Maritime University Dissertations

No abstract provided.