Sustainability

Climate Change and Sustainable Transportation: The Case of California

Elizabeth Deakin
2011

California has adopted innovative legislation to tackle climate change. Energy-efficient buildings, lower-emissions industrial processes, and more fuel-efficient transportation vehicles operating on cleaner fuels are among the many strategies that are being implemented. However, to attain the needed reductions, California must find additional strategies to reduce greenhouse-gas emissions, especially from the transportation sector, which is a large fraction of the total emissions problem. This paper discusses the efforts that are underway to further increase transportation efficiency, shift...

California's Futures: Accommodating Growth in An Era of Climate Change and Rising Fuel Prices

Elizabeth Deakin
2008

Sometime between 2025 and 2030, California's population will reach 50 million. During this same period, the state (and indeed the entire world) must find effective ways to substantially reduce greenhouse gas (GHG) emissions in hopes of slowing and reversing climate change. California has committed to such reductions in SB 32 and Executive Order S-3-05; the state has pledged to reduce GHG to 2000 levels by 2010 (11 percent below business-as-usual), to 1990 levels by 2020 (25 percent below business-as-usual), and to eighty percent below 1990 levels by 2050. Accomplishing these reductions...

Equity and Environmental Justice in Sustainable Transportation: Toward A Research Agenda

Elizabeth Deakin
2007

Equity and environmental justice issues have again become prominent topics of debate in transportation planning and research in the last ten years. Advocates for environmental justice – for short, EJ – have made themselves highly visible in many transportation planning and decision-making processes, in some cases seeking seats at the table and in other cases using protest, political pressure, and legal action to force change. Transportation practitioners have responded in many different ways, in some cases by forming partnerships for new programs serving low income and minority populations...

The Challenge of Urban Transportation in California

Robert Cervero
Elizabeth Deakin
2008

As California grows, increased travel from more households, business activity, and goods movement will surely increase greenhouse gas emissions, lead to more congestion and air pollution, and damage ecosystems and neighborhoods—unless we change the basics of travel in California. We need to take action now to deliver a sustainable transportation system that provides the mobility and accessibility necessary for a prosperous economy, and to find ways of doing so that also assure a healthy environment, social equity, and a high quality of life. Here are some ideas for managing, improving, and...

Determining Fair Share Regional Targets for Reduction of Greenhouse Gas Emissions from Transportation and Land Use: California's Experience Under Senate Bill 375

Elisa Barbour
Gregory Newmark
Elizabeth Deakin
2011

California passed landmark planning legislation, Senate Bill (S.B.) 375, in 2008, calling on the state's urban regions to reduce greenhouse gas emissions through more efficient transportation and land use. During 2010, the California Air Resources Board worked with the state's 18 metropolitan planning organizations to define and adopt performance targets for emissions reductions in each region according to S.B. 375. This target-setting process represents the first systematic effort by a U.S. state to assess the impacts of existing regional transportation and land use plans on greenhouse...

Regional Planning for Sustainable Development: Lessons from California

Elizabeth Deakin
Elisa Barbour
Kathryn Exon Smith
2024

The rapid growth of Canadian metropolitan areas poses challenges for sustainability, with traffic congestion, housing affordability, and environmental degradation all increasing public concern. This paper reviews California’s experience in addressing these issues through regionwide, mandated scenario planning, examining transportation and land use strategies that could improve long-term sustainability, i.e., supporting a socially equitable society with a strong economy and a healthy and livable environment. The paper is based on a review of the literature and interviews with nine Canadian...

Multi-stage Models for Dynamic Ride-Sharing in Taxi Services and Congestion Analysis

Quadrifoglio, Luca
Zhang, Cheng
Sun, Min-Ci
Maria Laura Delle Monache
Yeo, Yuneil
2024

This research introduces practical optimization model for implementing ride-sharing in taxi services and studies the effects of ride-sharing on the congestion status through the case study of Chicago. Ride-sharing combines trips into one ride-shared trip with the objective of maximizing the total mileage saving. This research proposes a multi-stage model to optimize rider matches, aiming to reduce the total travel distance and enhance the matching of multiple riders. To validate the effectiveness of the model, real taxi data from Chicago is used, demonstrating significant improvements in...

High Accuracy Location Based Services CostBenefit Study: Final Report

Goodliss, Adam
Manasseh, Christian
Ekambaram, Venkatesan
Raja Sengupta
Kanafani, Adib
Ramchandran, Kannan
2011

This report presents a benefit and cost study of a Cooperative High‐Accuracy LOcation (C‐HALO) service. A High Accuracy Location service should be ubiquitous and reliable as the GPS constellation. A survey of the literature on location services reveals a body of work on the benefits of a high accuracy location service. Focusing on road travel, benefits are estimated to be between $160-$320 billion dollars over slightly more than 20 years. The benefits arise from smoother traffic flow on the roads leading to reduced travel delays, and fewer accidents leading to reduced injuries and saved...

The Quantified Traveler: Using Personal Travel Data to Promote Sustainable Transport Behavior

Jariyasunant, Jerald
Carrel, Andre
Ekambaram, Venkatesan
Gaker, D. J.
Kote, Thejovardhana
Raja Sengupta
Joan Walker
2011

With the advent of ubiquitous mobile sensing and self-tracking groups, travel demand researchers have a unique opportunity to combine these two developments to improve the state of the art of travel diary collection. While the use of mobile phones and the inference of travel diaries from GPS and sensor data allows for lower-cost, longer surveys, we show how the self-tracking movement can be leveraged to interest people in participating over a longer period of time. By compiling personalized feedback and statistics on participants’ travel habits during the survey, we can provide the...

The Quantified Traveler: Using personal travel data to promote sustainable transport behavior

Jariyasunant, Jerald
Carrel, Andre
Ekambaram, Venkatesan
Gaker, D. J.
Kote, Thejovardhana
Raja Sengupta
Walker, Joan L.
2011

With the advent of ubiquitous mobile sensing and self-tracking groups, travel demand researchers have a unique opportunity to combine these two developments to improve the state of the art of travel diary collection. While the use of mobile phones and the inference of travel diaries from GPS and sensor data allows for lower-cost, longer surveys, we show how the self-tracking movement can be leveraged to interest people in participating over a longer period of time. By compiling personalized feedback and statistics on participants’ travel habits during the survey, we can provide the...