Planning

Meeting SB1 Transportation Systems Performance Goals

Mauch, Michael
McKeever, Benjamin
Skabardonis, Alexander
2018

This research project directly addresses the Caltrans policy question of “How to meet the SB 1 ten-year (2027) mandated preliminary performance outcomes for additional state highway investments?” More specifically, the study focuses on performance outcome number 4: “Not less than 90 percent of the transportation management system units in good condition”. As part of this project, the research team evaluated the Caltrans performance-based methodology to achieve the 90% performance goal in addition to completing a review of relevant reports from the Federal Highway Administration (FHWA),...

Summary of Interviews with California Metropolitan Planning Organizations About Senate Bill 375 and the Sustainable Communities Strategies

Amini, Jazmin
Kerchof, Clay
Mathews, Laurel
Thompson, Mathew
2021

In July and August of 2020, a research team of four graduate students from UC Berkeley’s Department of City and Regional Planning conducted interviews with directors and other high-level staff representing several of California’s metropolitan planning organizations (MPOs) to gather information on the achievements and challenges associated with the implementation of SB 375. Key takeaways from this effort include: 1) MPOs are not requesting additional authorities or oversight of local land use decisions; 2) MPOs use funding as “carrots” to incentivize local plans to align with regional goals...

A Variable Formulation of Kinematic Waves: Solution Methods

Daganzo, Carlos F.
2003

This paper presents improved solution methods for kinematic wave trafficc problems with concave flow-density relations. As explained in part I of this work, the solution of a kinematic wave problem is a set of continuum least-cost paths in space-time. The least cost to reach a point is the vehicle number. The idea here consists in overlaying a dense but discrete network with appropriate costs in the solution region and then using a shortest-path algorithm to estimate vehicle numbers. With properly designed networks, this procedure is more accurate than existing methods and can be applied...

Transportation Models In the Policy-Making Process: Uses, Misuses, And Lessons For The Future

Brinkman, Anthony
Goldman, Todd
1998

Panel 1. This session set the stage for the conference by examining some of the overarching issues in transportation modeling. Martin Wachs spoke about the promise and limitation of models from an ethical frame of reference. Genevieve Giuliano followed with an examination of how some of the changes underway in society may limit the ability to produce useful transportation forecasts. Finally, Larry Dahms commented from the perspective of an agency that operates within the policy-making process. Panel 2. The aim of this session was to generate a discussion of ways to make better use of...

The General Transit Feed Specification Makes Trip-Planning Easier — Especially During a Pandemic — Yet its Use by California Agencies is Uneven

Frick, Karen Trapenberg, PhD
Kumar, Tanu, PhD
Li, Ruyin
Patil, Atharva
Post, Alison, PhD
2020

Developed in 2005, the General Transit Feed Specification (GTFS) is making transit trip planning easier by allowing public transportation agencies to share transit schedules in an electronic format that can be used by a variety of trip-planning applications, such as Google Maps. The GTFS can be used to share static transit schedules (GTFS-s) or provide real-time information on transit vehicle arrivals and departures (GTFS-r). Providing real-time updates has proven to be exceptionally valuable during the COVID-19 pandemic. For example, between January 13th and April 25th of this year Apple...

Shared Mobility Resources: Helping to Understand Emerging Shifts in Transportation

Shaheen, Susan
Cohen, Adam
Zohdy, Ismail
2018

Shared mobility is a transportation strategy that is rising in prominence and has thepotential to align with supportive land use, mobility, social, and environmental goals. As a concept, the term applies to any mode, whether bicycle, car, public transit, or other mode, in which shared use (concurrent or sequential) is often facilitated by smartphone apps and technology. Casual carpooling is one example in which sharing has been more organic and non-technological in nature. Given shared mobility’s notable growth and expansion in recent years, it merits a deeper understanding in light of its...

Real-World Simulations of Life with an Autonomous Vehicle Suggest Increased Mobility and Vehicle Travel

Harb, Mustapha
Walker, Joan
Malik, Jai
Circella, Giovanni
2021

Fully autonomous vehicles are expected to have a profound effect on travel behavior. The technology will provide convenience and better mobility for many, allowing owners to perform other tasks while traveling, summon their vehicles from a distance, and send vehicles off to complete tasks without them. These travel behaviors could lead to increases in vehicle miles traveled that will have major implications for traffic congestion and pollution. To estimate the extent to which travel behavior will change, researchers and planners have typically relied on adjustments to existing travel...

Insights on Autonomous Vehicle Policy from Early Adopter Cities and Regions

Chatman, Daniel G., PhD
Moran, Marcel E.
2019

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...

MPO Planning and Implementation of State Policy Goals

Barbour, Elisa
Rodriguez, Emil
Thoron, Noah
Handy, Susan
Lee, Amy
2021

MPO Planning and Implementation of State Policy Goals evaluates California metropolitan planning organizations’ regional transportation plans and sustainable communities strategies and looks at the relationship between MPO plans and what is actually funded through transportation improvement programs.

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...