policy brief

Electrified Buses Provide Life Cycle Environmental Benefits but Need Cost Reductions and Policy Support for Near-Term Adoption

Abstract

In December 2018, the California Air Resources Board (CARB) approved the Innovative Clean Transit regulation, which is designed to transition the state to all-electric bus fleets by 2040. To comply with this first-of its-kind regulation, transit agencies have two alternatives: battery electric buses (BEBs) and hydrogen fuel cell electric buses (FCEBs). These options vary in energy requirements, overall effectiveness in reducing different emission types, associated life cycle costs (including disposal of the bus), and ability to meet operating needs of transit agencies. To support transit agencies and decision makers transition to cleaner bus technologies, researchers at UC Irvine developed a life cycle-based analysis (LCA) tool to estimate the potential costs and benefits of switching to BEBs and FCEBs compared to conventional buses. The LCA tool was tested on the Orange County Transportation Authority (OCTA) to better understand the environmental impacts and cost constraints.

policy brief

New Tool from UC Irvine Could Save the State Millions while Providing Better Data on Truck Activity in California

Abstract

The U.S. population is expected to increase to 389 million by 2045 compared to 321 million in 2015, with economic growth doubling in size. Consequently, freight movements are expected to increase by approximately 42 percent by 2040. Among all freight modes, trucks show the largest expected increase in flows by 2040. However, the ability for transportation agencies to understand and adequately plan for increased truck movement and related impacts is extremely limited due to a lack of data on truck travel patterns.The main sources of truck data are truck surveys and truck counts collected by infrastructure-based detectors. Surveys provide detailed information (i.e., truck type, Origin-Destination, weight, and vehicle miles traveled) useful for understanding truck activity pattern by industry or associating freight commodities with specific truck types, but because of low response rates, surveys cannot be utilized to provide the actual quantification of truck activity at the geographical level. In-pavement sensor technologies, such as Weigh-in-Motion (WIM) or Automated Vehicle Classifiers (AVCs), provide point observations, such as truck volumes. These existing data sources are used to model and generate truck path flows (i.e., travel routes) and/or travel time estimations.

policy brief

New Tool from UC Irvine Could Save the State Millions while Providing Better Data on Truck Activity in California

Abstract

The U.S. population is expected to increase to 389 million by 2045 compared to 321 million in 2015, with economic growth doubling in size. Consequently, freight movements are expected to increase by approximately 42 percent by 2040. Among all freight modes, trucks show the largest expected increase in flows by 2040. However, the ability for transportation agencies to understand and adequately plan for increased truck movement and related impacts is extremely limited due to a lack of data on truck travel patterns.The main sources of truck data are truck surveys and truck counts collected by infrastructure-based detectors. Surveys provide detailed information (i.e., truck type, Origin-Destination, weight, and vehicle miles traveled) useful for understanding truck activity pattern by industry or associating freight commodities with specific truck types, but because of low response rates, surveys cannot be utilized to provide the actual quantification of truck activity at the geographical level. In-pavement sensor technologies, such as Weigh-in-Motion (WIM) or Automated Vehicle Classifiers (AVCs), provide point observations, such as truck volumes. These existing data sources are used to model and generate truck path flows (i.e., travel routes) and/or travel time estimations.

policy brief

Insights on Autonomous Vehicle Policy from Early Adopter Cities and Regions

Abstract

Autonomous vehicles (AVs) are being widely tested and piloted to carry passengers and freight. However, the potential uses and impacts of AVs in communities are uncertain. There are claims that AVs may be able to improve road safety, make travel more convenient, lower shipping costs, and reduce the need for automobile parking. But there are also concerns that AVs may increase road congestion, reduce transit ridership, compete for curb space, and even increase urban sprawl.To better understanding how cities and regions are currently engaging with and planning for AVs, twenty interviews were conducted with individuals from “early adopter” public agencies across the U.S. who are involved in AV testing, regulation, and planning. Interviews were supplemented by an extensive review of policy and planning documents. This policy brief highlights key findings from this research with more details available in the full report: Autonomous Vehicles in the United States: Understanding Why and How Cities and Regions are Responding.

policy brief

Incentives for Plug-in Electric Vehicles Are Becoming More Important Over Time for Consumers

Abstract

Federal and state governments are offering incentives to those who purchase or lease plug-in electric vehicles (PEVs), which include both battery electric vehicles (BEVs) and plug-in hybrid electric vehicles (PHEVs). Policymakers are beginning to consider the phase-out of these incentives and how a phase-out might impact PEV market growth. This brief highlights new research on the importance of incentives to consumers over time, based on survey data from 14,000 PEV-owning households in California between 2010 and 2017, collected and analyzed by the Plug-in Hybrid & Electric Vehicle Research Center at UC Davis. The PEV incentives included as part of this research are those currently available to Californian consumers: high occupancy vehicle (HOV) lane access; the US federal tax credit, which offers up to $7,500 to PEV buyers; and the California Clean Vehicle Rebate Project (CVRP), which offers $1,500 for a PHEV, $2,500 for a BEV, and an additional $2,000 for low-income consumers

research report

An Assessment of Performance Measures in the Transportation Development Act

Publication Date

October 1, 2019

Author(s)

Brian D. Taylor, Esther Huang, Jamiee Lederman, John Gahbauer, Juan Matute, Martin Wachs

Abstract

This report examines the performance measures requirements in California’s Transportation Development Act (TDA) of 1971. The TDA is an important source of funding for the state’s public transit agencies, representing approximately 18 percent of their total (2018) revenue between the TDA’s two funds (LTF and STA). Since the TDA’s passage in 1971, the transit operating environment in California has changed, in some cases dramatically. The state has nearly doubled in population (20.4 million in 1971 to 39.8 million in 2019), traffic has worsened considerably, climate change is now a central public policy focus, and many places around the state are investing heavily in making public transit a viable alternative to driving. Our research examined the TDA’s performance requirements and their effects on the state’s transit operators. The research team also considered alternative approaches to both transit finance and performance requirements, by studying transit funding programs in 13 other states that invest significant amounts of funding in transit. In brief, the team found that the TDA’s use of performance measurements to allocate funding is unusual. The states that were studied do not for the most part make funding contingent on performance, thereby avoiding the unproductive and difficult-to-implement “death penalty” (Taylor, 1995) of withholding subsidies for a much-needed public service. In several of the cases analyzed, by contrast, states guarantee specific levels or amounts of funding for transit service. To examine how the TDA’s performance measures are working, the research team conducted a survey of California transit professionals at agencies and at Regional Transportation Planning Agencies (RTPAs). That California’s aspirations for transit have evolved over the years is reflected in the frequent loopholes and exemptions the legislature has added to the TDA to give struggling operators more latitude to receive funding in order to meet multiple goals and objectives while staying in compliance with a single cost-effectiveness goal. The extent and frequency with which these exemptions have occurred suggests that the larger aims for public transit, and indeed the goals for the TDA program itself, have evolved, and need to be re-thought holistically, rather than incrementally. Accordingly, the report offers six recommendations concerning transit performance assessment in the TDA.

policy brief

Gaining Wait? Analyzing the Congestion Impacts of Road Diets in Los Angeles