Constraining Urban CO2 Emissions Using Mobile Observations from a Light Rail Public Transit Platform

2020 ◽  
Vol 54 (24) ◽  
pp. 15613-15621
Author(s):  
Derek V. Mallia ◽  
Logan E. Mitchell ◽  
Lewis Kunik ◽  
Ben Fasoli ◽  
Ryan Bares ◽  
...  
Keyword(s):  
Co2 Emissions ◽  
Public Transit ◽  
Light Rail

Impacts on Vehicle Occupancy and Airport Curb Congestion of Transportation Network Companies at Airports

2018 ◽  
Vol 2672 (23) ◽  
pp. 52-58 ◽  
Author(s):  
Karina Hermawan ◽  
Amelia C. Regan
Keyword(s):  
Los Angeles ◽  
San Francisco ◽  
Public Transit ◽  
Transportation Network ◽  
Light Rail ◽  
International Airport ◽  
Using Data ◽  
Standard Service ◽  
Transportation Network Companies

How does the growth of transportation network companies (TNCs) at airports affect the use of shared modes and congestion? Using data from the 2015 passenger survey from Los Angeles International Airport (LAX), San Francisco International Airport (SFO), and Oakland International Airport (OAK), this research analyzes TNCs’ relationship with shared modes (modes that typically have higher vehicle-occupancy and include public transit such as buses and light rail, shared vans or shuttles) and the demand for their shared vs. standard service at the airport. Because TNCs both replace shared rides and make them possible, the research also measured the net effects at these airports. The results suggest that in 2015, TNCs caused 215,000 and 25,000 passengers to switch from shared to private modes at SFO and OAK, respectively. By 2020, the increase is expected to be about 840,000 and 107,000 passengers per year, respectively.

Impacts of Light Rail Transit on Labor Participation and Housing Affordability in the U.S.: Longitudinal Analysis Using Propensity Score Matching

2021 ◽  
pp. 036119812110296
Author(s):  
Keuntae Kim ◽  
Keunhyun Park ◽  
Arthur C. Nelson
Keyword(s):  
Propensity Score ◽  
Propensity Score Matching ◽  
Public Transit ◽  
Housing Affordability ◽  
Light Rail ◽  
Rail Transit ◽  
Full Time ◽  
Light Rail Transit ◽  
Labor Participation ◽  
The U.S

Planners and planning scholars have debated the effects of public transit on changes in various employment outcomes. However, few studies have tried to understand how public transit affects employment changes in a community while accounting for housing costs at the same time. As an update to and methodological advance on early studies, this study aims to measure light rail transit (LRT) systems’ impacts on the change in labor participation and housing affordability. This study uses the decennial Census and 5-year American Community Survey (ACS) data at the block group level and conducts propensity score matching in 12 selected LRT systems across the U.S. opened between 2000 and 2010. By comparing growth rates of the average weeks worked and the median gross rent between treatment and control groups, the results show that an introduction of an LRT station increases the average weeks worked—a measure of labor participation—while not raising the median gross rent. Further analysis also shows that the increased average weeks worked after operation of LRT systems is a result of an increase in the percentage of full-time and year-round workers and a decrease in the proportion of part-time and part-year workers. Ultimately, the findings provide planners and policymakers with a better understanding of the effects of LRT systems on the economic stability of urban communities.

Market-Segmentation Study of Future and Potential Users of the New Réseau Express Métropolitain Light Rail in Montreal, Canada

2021 ◽  
pp. 036119812110145
Author(s):  
Nicolette Dent ◽  
Leila Hawa ◽  
James DeWeese ◽  
Rania Wasfi ◽  
Yan Kestens ◽  
...  
Keyword(s):  
Market Segmentation ◽  
Public Transport ◽  
Public Transit ◽  
Transport Infrastructure ◽  
Light Rail ◽  
Urban Core ◽  
New Public ◽  
Key Characteristics ◽  
Transit Agencies ◽  
Under Construction

Goals for public transit agencies and new public transport infrastructure projects include attracting new riders and retaining existing system users. An understanding of the public transport market and its preferences, habits, and attitudes can help public transit agencies reach these goals by shedding light on how to increase customer satisfaction. To understand potential users of one of Montreal’s most recent major transport projects, the Réseau express métropolitain (REM), we conducted a survey in Fall 2019 while the light-rail system was under construction. Drawing on vetted transport market-segmentation frameworks, this study employs an exploratory factor analysis to reveal factors that affect respondents’ propensity to use the REM. A k-means cluster test is applied to the factors to articulate market segments. The analysis returned four clusters that form a clear spectrum of least likely to most likely REM users: car-friendly non-users, urban core potential users, transit-friendly users, and leisure and airport users. Positive opinion, proximity, and desire to use the REM for leisure or non-work trips are three key characteristics of likely users. There is a visible relationship between clusters who are likely to use the REM and clusters who agree that the REM will benefit their neighborhood. Improving people’s perception of the potential benefit of the REM to their neighborhood, better accommodating leisure use, emphasizing and communicating appealing destinations, and highlighting transit connections are four core ways that planners could work to potentially increase the number of people who are likely to use the REM.

scholarly journals ENVIRONMENTAL BENEFITS FROM CO2 REDUCTION, DUE TO MODAL REPLACEMENT: CASE STUDY ON LIGHT RAIL VEHICLE IN BRASILIA CITY

2016 ◽  
Author(s):  
Paulo Henrique da Silva Costa ◽  
Leisy Mikaelly Alves Teixeira ◽  
Janaína Cardoso Pinheiro ◽  
Fabiana Serra Arruda ◽  
Augusto César de Mendonça Brasil
Keyword(s):  
Co2 Emissions ◽  
Co2 Reduction ◽  
Federal District ◽  
Environmental Benefits ◽  
Light Rail ◽  
Rail Vehicle ◽  
Private And Public ◽  
Carbon Dioxide Co2 ◽  
Reduction Of Co2

This work aims to measure the reduction of Carbon Dioxide (CO2) emissions in atmosphere by replacing the modal urban bus by Light Rail Vehicle (VLT). In order to accomplish this objective, a case study in Brasilia, Federal District, in the stretch of VLT which passes on Via W-3 South was conducted. The Theory of Externalities that discusses the right to ownership of private and public goods and responsibilities about the positive and negative externalities caused by the agents and individuals of society was used to support the analyses. It was used the Top-Down method, which allowed the calculation the direct emissions of CO2. The values obtained on the reduction of CO2 emissions were converted into values of carbon credits as a way to economically measure such reductions.  The results showed a significant reduction in CO2 emissions per year and consequent environmental benefit.DOI: http://dx.doi.org/10.4995/CIT2016.2016.3480 

First-Mile-Last-Mile Collector-Distributor System using Shared Autonomous Mobility

2020 ◽  
Vol 2674 (10) ◽  
pp. 638-647
Author(s):  
Krishna Murthy Gurumurthy ◽  
Kara M. Kockelman ◽  
Natalia Zuniga-Garcia
Keyword(s):  
Autonomous Vehicles ◽  
Public Transit ◽  
Walking Distance ◽  
Light Rail ◽  
Policy Makers ◽  
Agent Based ◽  
Last Mile ◽  
Policy Measures ◽  
Autonomous Mobility ◽  
And Shifts

High costs of owning fully-automated or autonomous vehicles (AVs) will fuel the demand for shared mobility, with zero driver costs. Although sharing sounds good for the transport system, congestion can easily rise without adequate policy measures. Many or all public transit lines will continue to exist, and carefully-designed policies can be implemented to make good use of fixed public assets, like commuter- and light-rail lines. In this study, a shared AV (SAV) fleet is analyzed as a potential solution to the first-mile-last-mile (FMLM) problem for access to and from public transit. Essentially, SAVs are analyzed as collector-distributor systems for these mass-movers and compared with a door-to-door (D2D) service. Results from an agent-based simulation of Austin, Texas, show that SAVs have the potential to help solve FMLM transit problems when fare benefits are provided to transit users. Restricting SAV use for FMLM trips increases transit coverage, lowers average access and egress walking distance, and shifts demand away from park-and-ride and long walk trips. When SAVs are available for both D2D use and FMLM trips, high SAV fares help maintain transit demand, without which the transit demand may decrease significantly, affecting the transit supply and the overall system reliability. Policy makers and planners should be wary of this shift away from transit and may be able to increase transit usage using policies tested in this study.

scholarly journals Monitoring of greenhouse gases and pollutants across an urban area using a light-rail public transit platform

2018 ◽  
Vol 187 ◽  
pp. 9-23 ◽  
Author(s):  
Logan E. Mitchell ◽  
Erik T. Crosman ◽  
Alexander A. Jacques ◽  
Benjamin Fasoli ◽  
Luke Leclair-Marzolf ◽  
...  
Keyword(s):  
Greenhouse Gases ◽  
Urban Area ◽  
Public Transit ◽  
Light Rail
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