Policy

Flexibility in California Transportation Funding Programs and Implications for More Climate-Aligned Spending

Segal, Katie
Elkind, Ethan
Lamm, Ted
2021

Flexibility in California Transportation Funding Programs and Implications for More Climate-Aligned Spending examines key features of the legislative authority for transportation planning and finance in California, including local option sales taxes for transportation, and assesses the amount of flexibility that current laws and practices allow for reprioritizing projects as problems and priorities change.

SimUAM: A Comprehensive Microsimulation Toolchain to Evaluate the Impact of Urban Air Mobility in Metropolitan Areas

Yedavalli, Pavan
Burak Onat, Emin
Peng, Xin
Sengupta, Raja
Waddell, Paul
Bulusu, Vishwanath
Xue, Min
2021

Over the past several years, Urban Air Mobility (UAM) has galvanized enthusiasm from investors and researchers, marrying expertise in aircraft design, transportation, logistics, artificial intelligence, battery chemistry, and broader policymaking. However, two significant questions remain unexplored: (1) What is the value of UAM in a region’s transportation network?, and (2) How can UAM be effectively deployed to realize and maximize this value to all stakeholders, including riders and local economies? To adequately understand the value proposition of UAM for metropolitan areas, we develop...

Evaluation of California State and Regional Transportation Plans and Their Prospects for Attaining State Goals

Deakin, Elizabeth
Chow, Chun Ho
Son, Daisy
Handy, Susan
Barbour, Elisa
Lee, Amy
Rodriguez, Emil
Gahbauer, John
Coutin, Talia
Matute, Juan
Rios Gutierrez, Alejandra
Rios Gutierrez, Nataly
Segal, Katie
Elkind, Ethan
Lamm, Ted
2021

Assembly Bill (AB) 285 (Friedman, 2019) requires the California Strategic Growth Council (SGC) to submit a report to the Legislature by January 31, 2022, that includes the following:An overview of the California Transportation Plan (CTP). An overview of all regional Sustainable Communities Strategies (SCS) and any alternative planning strategies, as needed. An assessment of how the implementation of the CTP and regional plans “will influence the configuration of the statewide integrated multimodal transportation system.”  A “review of the potential impacts and opportunities for...

Aviation System Performance Measures

Gosling, Geoffrey D.
1999

Within the transportation community, there is a growing recognition of the need to consider decisions addressing future investments in the transportation system from a multimodal perspective. This viewpoint has been given added weight by the passage of the Intermodal Surface Transportation Efficiency Act (ISTEA) in 1991, which not only recognized the importance of viewing the transportation system from an intermodal perspective, but also stressed the need to address the efficiency with which the system meets the transportation needs of its users. This approach was reinforced with the...

A Brief History of Transportation Policies and Institutions

Deakin, Elizabeth
2021

A Brief History of Transportation Policy and Institutions presents the development of transportation systems in the United States, with particular attention to California. The review includes key technological advances in transportation and the institutions that were developed to implement them. The paper also discusses the problem of organizational inertia and the issues associated with changing organizational culture to better reflect the problems of the day. Review of Statewide Transportation Plans for California reviews the most recently adopted CTP and other key transportation plans...

Examination of Key Transportation Funding Programs in California and Their Context

Gahbauer, John
Matute, Juan
Coutin, Talia S.
Rios Gutierrez, Alejandra
Rios Gutierrez, Nataly
2021

Examination of Key Transportation Funding Programs in California and Their Context assesses the congruence between funding programs and state goals for transportation. Particular attention is given to major funding sources, such the State Operation and Protection Program, and programs designed to promote key state goals, including the Affordable Housing and Sustainable Communities program, the Transit and Intercity Rail Capital Program, the Transformative Climate Communities program, and the Sustainable Transportation Planning Grant program.

Variable-Rate State Gasoline Taxes

Ang-Olson, Jeffrey
Wachs, Martin
Taylor, Brian D.
1999

Inflation and increased fuel economy have reduced the buying power of the revenues collected from state and federal motor fuel taxes. Because fuel taxes are almost always collected on a per-gallon basis, in most states they must be raised by specific acts of the legislature and it is becoming increasingly difficult to find the political support necessary to raise them. A number of states have experimented with fuel taxes that adjust automatically by being indexed to the price of gasoline, to the consumer price index, or to some indicator of highway construction and maintenance costs. This...

Review of Statewide Transportation Plans for California

Deakin, Elizabeth
Chow, Chun Ho
Son, Daisy
2021

California has adopted ambitious goals for its transportation systems. The state has pledged to reduce greenhouse gas(GHG) emissions by 40 percent compared to 1990 levels and by 80 percent by 2050, and has also committed to achieve carbon neutrality by 2045. With transportation a major emitter, substantial changes in transportation vehicles, fuels, operations, and user choices must be achieved to meet these goals. As pressing as climate change goals must be, other goals remain important. California has pledged to maintain its transportation infrastructure in a state of good repair, provide...

Spatial Models of Morning Commute Consistent with Realistic Traffic Behavior

Lago, Alejandro
2003

Urban planners are increasingly concerned about the sprawling suburban development in metropolitan areas around the world, which they often blame for growing traffic congestion and excessive highway investment needs. This dissertation seeks to shed light on this issue by studying the relationship between morning commute congestion and urban form. The causes and consequences of traffic congestion have been extensively studied in the economics and engineering literatures. Unfortunately, most conclusions have been drawn from very idealized models, which either fail to consider adequately the...

Welfare Analysis of Informal Transit Services in Brazil and the Effects of Regulation

Golub, Aaron David
2003

In Brazil, the recent explosion of informal transport activity is having profound effects on formal, regulated transport systems and is the source of great controversy in the urban passenger transportation arena. A variety of policies are being proposed to manage what has been an uncontrolled growth of the sector. This study seeks to understand the advantages these systems have for users who choose them, and how proposed policies will impact these benefits. A corridor in Rio de Janeiro with substantial informal activity was used as a case study and field trips were made to gather basic...