Transportation Commons^™

Walking While Black: Racial Bias At The Crosswalk, Kimberly Barsamian Kahn

TREC Project Briefs

This project, led by Kimberly Kahn of Portland State University, explores social identity factors (race and gender) that influence drivers’ behavior in interactions with pedestrians at crosswalks. One dangerous potential point of conflict for pedestrians within the transportation system is interactions with drivers at crosswalks. In 2010, there was one crash-related pedestrian death every two hours and an injury every eight minutes, and racial minorities are disproportionately represented in these pedestrian fatalities. In light of this disparity, this project examines whether racial discrimination occurs at crosswalks, which may lead to disparate crossing experiences and disproportionate safety outcomes.

Racial Bias In Drivers' Yielding Behavior At Crosswalks: Understanding The Effect, Kimberly Barsamian Kahn, Jean M. Mcmahon, Tara Goddard, Arlie Adkins

TREC Final Reports

This project explores social identity factors (race and gender) that influence drivers’ behavior in interactions with pedestrians at crosswalks. One dangerous potential point of conflict for pedestrians within the transportation system is interactions with drivers at crosswalks (NHTSA, 2009). In 2010, there was one crash-related pedestrian death every two hours and an injury every eight minutes, and racial minorities are disproportionately represented in these pedestrian fatalities (CDC, 2013). In light of this disparity, this project examines whether racial discrimination occurs at crosswalks, which may lead to disparate crossing experiences and disproportionate safety outcomes. Racial minorities experience racial discrimination across various …

Does Compact Development Increase Or Reduce Traffic Congestion?, Reid Ewing, Guang Tian, Torrey Lyons

TREC Final Reports

From years of research, we know that compact development that is dense, diverse, well-designed, etc. produces fewer vehicle miles traveled (VMT) than sprawling development. But compact development also concentrates origins and destinations. No one has yet determined, using credible urban form metrics and credible congestion data, the net effect of these countervailing forces on area-wide congestion. Using compactness/sprawl metrics developed for the National Institutes of Health, and congestion data from the Texas Transportation Institute’s (TTI’s) Urban Mobility Scorecard Annual Report database, this study seeks to determine which opposing point of view of sprawl and congestion is correct. It does so …

An Abbreviated Leap: The Geopolitical And Geoeconomic Significance Of The China – Pakistan Economic Corridor To The New Silk Road, Emma Nichols

Independent Study Project (ISP) Collection

The objective of this analysis is to reveal the geopolitical and geoeconomic significance of the China – Pakistan Economic Corridor of the Belt and Road Initiative to its major stakeholders; Pakistan and China. In 2013, Chinese President Xi Jinping unveiled one of the most ambitious international infrastructure plans in modern history. The plan, in its earliest stages, is currently underway with its first portion, the China – Pakistan Economic Corridor (CPEC). Through careful preliminary analysis of the greater Belt and Road Initiative, the China – Pakistan Economic Corridor, and history of Sino-Pak relations, the motivations of the collaborating nations are …

Does Compact Development Increase Or Reduce Congestion?, Reid Ewing

TREC Project Briefs

The net effects of sprawl or compact development on area-wide traffic congestion have been a subject of debate among transportation researchers.

This project aims to settle the debate using:

• Congestion data from the Texas Transportation Institute’s Urban Mobility Scorecard database;
• Compactness/sprawl metrics developed at the University of Utah.

Compact development may help at the margin, but the greatest reduction in congestion appears to be achieved through expansion of surface streets and higher highway user fees.

Combinatorial Auction For Transportation Matching Service: Formulation And Adaptive Large Neighborhood Search Heuristic, Baoxiang Li, Hoong Chuin Lau

Research Collection School Of Computing and Information Systems

This paper considers the problem of matching multiple shippers and multi-transporters for pickups and drop-offs, where the goal is to select a subset of group jobs (shipper bids) that maximizes profit. This is the underlying winner determination problem in an online auction-based vehicle sharing platform that matches transportation demand and supply, particularly in a B2B last-mile setting. Each shipper bid contains multiple jobs, and each job has a weight, volume, pickup location, delivery location and time window. On the other hand, each transporter bid specifies the vehicle capacity, available time periods, and a cost structure. This double-sided auction will be …

Webinar: The Effects Of Demand-Responsive Parking On Transit Usage And Congestion: Evidence From Sfpark, Nicole Ngo

TREC Webinar Series

Parking is a serious issue in many urban areas, especially those experiencing rapid population growth. To address this problem, some cities have implemented demand-responsive pricing programs, where parking prices vary depending on the occupancy rate in a previous period. Yet, few empirical studies have rigorously evaluated these programs. In this study, we investigate the impacts of SFpark, a demand-responsive pricing parking program in San Francisco that began in 2011. We observe effects on three important aspects of urban transportation: parking availability, transit bus ridership and congestion. The timing of this program is plausibly exogenous to factors that affect these outcomes …

Examining Accident Reports Involving Autonomous Vehicles In California, Francesca Favaro, Nazanin Nader, Sky Eurich, Michelle Tripp, Naresh Varadaraju

Faculty Publications

Autonomous Vehicle technology is quickly expanding its market and has found in Silicon Valley, California, a strong foothold for preliminary testing on public roads. In an effort to promote safety and transparency to consumers, the California Department of Motor Vehicles has mandated that reports of accidents involving autonomous vehicles be drafted and made available to the public. The present work shows an in-depth analysis of the accident reports filed by different manufacturers that are testing autonomous vehicles in California (testing data from September 2014 to March 2017). The data provides important information on autonomous vehicles accidents’ dynamics, related to the …

Customer Satisfaction Index Of Singapore 2017: Q2 Results, Institute Of Service Excellence, Smu

Research Collection Institute of Service Excellence (2007-2024)

The Customer Satisfaction Index of Singapore (CSISG) computes customer satisfaction scores at the national, sector, sub-sector, and company levels. The CSISG serves as a quantitative benchmark of the quality of goods and services produced by the Singapore economy over time and across countries. This is the CSISG’s eleventh year of measurement.

The Effects Of Demand-Responsive Parking On Transit Usage And Congestion: Evidence From Sfpark, Nicole S. Ngo, Chandra Kiran Krishnamurth

TREC Final Reports

Parking is a serious issue in many urban areas, especially those experiencing rapid population growth. To address this problem, some cities have implemented demand-responsive pricing programs, where parking prices vary depending on the occupancy rate in a previous period. Yet, few empirical studies have rigorously evaluated these programs, though they have the potential to improve turnover and much needed parking availability in growing cities with limited infrastructure. In this study, we investigate the impacts of SFpark, a demand-responsive pricing parking program in San Francisco that began in 2011. We focus on metered, on-street parking and exploit the timing of SFpark …

Tls Newsletter, September 2017, Unf Transportation And Logistics Society

Transportation & Logistics Society Newsletter

Inside the Newsletter: Fall Kick Off! Wednesday, September 13. President's Corner. Upcoming Events. Get to Know TLS Newsletter Editor, Juliana Young. Jax Chamber T & L Council. Life after Graduation with Ryan Moore, CTL

Analyzing The Potential Of Hybrid And Electric Off-Road Equipment In Reducing Carbon Emissions From Construction Industries, Matthew Holian, Jae-Ho Pyeon

Mineta Transportation Institute

This report quantifies the likely impact recent improvements in emissions technology in the heavy construction equipment fleet will have on national and state-level carbon emissions from construction industries. Specific technologies examined in this report include hybrid and electric-powered off-road equipment. Innovation in the equipment manufacturing industry, and adoption of innovative technology by construction firms, is driven by a wide range of factors, some of which can be influenced by public policy. Therefore, this paper describes policies available to public decision makers at the local, state and national levels that impact equipment use and development decisions, including those that encourage the …

Travel To Food: Transportation Barriers For The Food Insecure In Tampa Bay, Kevin Salzer, Ann Joslin

TREC Final Reports

In partnership with the Center for Urban Transportation Research (CUTR) at the University of South Florida (USF), the Transportation Innovation Group informed practical transportation solutions aimed at improved food access in Tampa Bay (Hillsborough, Pinellas and Pasco counties). The food pantry/bank sites that are part of Tampa Bay Network to End Hunger (TBNTEH) helped to gather data through a survey and interviews of food-related organizational leadership, staff and volunteers from each site to gain insight into how clients currently access emergency food sites (qualitative). This information was supplemented with a GIS analysis of transit accessibility for the food insecure in …

Transportation Access For The Food Insecure, Ann Joslin

TREC Project Briefs

A NITC small starts project explores transportation barriers for Tampa Bay’s food insecure population, and recommends strategies to help.

Following The Money From Investments To Outcomes, Robert Zako, Rebecca Lewis

TREC Project Briefs

While it’s accepted that mixed-use development promotes active travel, researchers don’t have a consensus on exactly how land use determines people’s travel patterns.

The research examined:

• The relationship between pedestrian travel and land use mix;
• The impact of land use mix on pedestrian travel;
• How operationalizing land use mix influences individual travel behavior

This work contributes theoretical and empirical tools for research and practice in transportation and land use planning.

Estimating Vehicles Emissions At Signalized Intersections In The Highway Capacity Manual, Yuanyuan Fan

Dissertations

Over the past decades, motor vehicle volumes have continued to increase at a high rate. As a result, engineers in the transportation field not only need more robust knowledge of traffic operation control and transportation planning, but more attention is also needed to understand and estimate the influences that this increasing volume of vehicles has on the environment, especially the influence on air quality. The EPA has stated that reducing carbon monoxide (CO) from vehicle emissions is the most significant way to control air pollution from the transportation sector.

The Highway Capacity Manual is a national and international resource that …

Demand Analysis Of The Search And Rescue Resources In Tianjin Haihe River Downstream, Yanfu Li

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Analyses And Predictions Of Traffic Flows And Incidents In Mirs Bay Water, Chao Jiang

Maritime Safety & Environment Management Dissertations (Dalian)

No abstract provided.

Modelling Panamax Spot Prices At Major Routes Based On Stock Moving Average Theory, Tianling Li

World Maritime University Dissertations

No abstract provided.

An Approach To Determine The Renewal Timing Of Ships : Based On The Theory Of Annual Average Cost, Lu Dai

World Maritime University Dissertations

No abstract provided.