Intelligent Transportation Systems

Vehicle Technologies for Achieving Near and Longer Term Fuel Economy and Climate Goals

Tim Lipman
2020
Motor vehicles are a key element of transport systems worldwide, providing vitally important access to goods and services. However, motor vehicles powered by internal combustion engines directly emit harmful pollutants and climate-changing gases. New fuels and new automotive technologies offer the potential to simultaneously make motor vehicles much cleaner and more efficient by reducing tailpipe emissions and allowing the focus to be on the “upstream” emissions from fuels production. This can be accomplished through an increasing array of hybrid electric and pure electric...

SMART Mobility. Advanced Fueling Infrastructure Capstone Report

John Smart
Zicheng Bi
Alicia Birky
Brennan Borlaug
Erin Burrell
Eleftheria Koutou
Dong-Yeon Lee
Tim Lipman
Andrew Meintz
Eric Miller
Ahmed Mohamed
Matthew Moniot
Amy Moore
Yutaka Motoaki
Zachary Needell
Omer Onar
Clement Rames
Nicholas Reincke
Mohammad Roni
Shawn Salisbury
Colin Sheppard
Danho Ange Lionel Toba
Victor Walker
Dustin Weigl
Eric Wood
Fei Xie
Yonggen Yi
Teng Zeng
Hongcai Zhang
Yan Zhou
Zhi Zhou
2020

The U.S. Department of Energy’s Systems and Modeling for Accelerated Research in Transportation (SMART) Mobility Consortium is a multiyear, multi-laboratory collaborative, managed by the Energy Efficient Mobility Systems Program of the Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Office, dedicated to further understanding the energy implications and opportunities of advanced mobility technologies and services. The first three-year research phase of SMART Mobility occurred from 2017 through 2019 and included five research pillars: Connected and Automated Vehicles,...

Opportunities for Integrating Hydrogen-Powered Vehicles and Intelligent Transportation Systems

Tim Lipman
2026

This paper presents the findings of an “Integrated Hydrogen/Intelligent Transportation Systems Evaluation for the California Department of Transportation” project that was conducted by the University of California – Berkeley. The project reviewed state hydrogen activities suggested potential applications of combined hydrogen and intelligent transportation system (ITS) technologies that warrant further study and field-testing. The main concept underlying this study is the potential for synergies between two rapidly evolving areas of advanced transportation and energy technology: hydrogen...

Reducing Greenhouse Emissions and Fuel Consumption: Sustainable Approaches for Surface Transportation

Susan Shaheen
Tim Lipman
2007

Climate change is rapidly becoming known as a tangible issue that must be addressed to avoid major environmental consequences in the future. Recent change in public opinion has been caused by the physical signs of climate change–melting glaciers, rising sea levels, more severe storm and drought events, and hotter average global temperatures annually. Transportation is a major contributor of carbon dioxide (CO2) and other greenhouse gas emissions from human activity, accounting for approximately 14 percent of total anthropogenic emissions globally and about 27 percent in the U.S....

Open-Source, Open-Architecture Software Platform for Plug-In Electric Vehicle Smart Charging in California

Tim Lipman
Callaway, Duncan
Peffer, Therese
von Meier, Alexandra
2020

This interdisciplinary eXtensible Building Operating System–Vehicles project focuses on controlling plug-in electric vehicle charging at residential and small commercial settings using a novel and flexible open-source, open-architecture charge communication and control platform. The platform provides smart charging functionalities and benefits to the utility, homes, and businesses.This project investigates four important areas of vehicle-grid integration research, integrating technical as well as social and behavioral dimensions: smart charging user needs assessment, advanced load control...

Analysis of The Combined Vehicle-and Post‐Vehicle-Use Value of Lithium‐Ion Plug-In-Vehicle Propulsion Batteries

Brett Williams
Tim Lipman
2011

Advances in electric-drive technology, including lithium-ion batteries, as well as the development of strong policy drivers such as California’s Global Warming Solutions Act, now contribute to a more promising market environment for the widespread introduction of plug-in vehicles in California. Nevertheless, battery costs remain high and uncertain, presenting significant hurdles to commercialization. This report builds upon previous research (CEC-500-2009-091) investigating the potential reduction in plug-in-hybrid battery lease payments that incorporation of value from postvehicle...

The CO2 Abatement Potential of California's Mid-Sized Commercial Buildings

Michael Stadler
Chris Marnay
Gonçalo Cardoso
Tim Lipman
Olivier Mégel
Srirupa Ganguly
Afzal Siddiqui
Judy Lai
2009

The Ernest Orlando Lawrence Berkeley National Laboratory (LBNL) is working with the California Energy Commission (CEC) to determine the potential role of commercial sector distributed generation (DG) with combined heat and power (CHP) capability deployment in greenhouse gas emissions (GHG) reductions. CHP applications at large industrial sites are well known, and a large share of their potential has already been harvested. In contrast, relatively little attention has been paid to the potential of medium-sized commercial buildings, i.e. ones with peak electric loads ranging from 100 kW to 5...

Air Traffic Control Using Large Language Models: Prompt Engineering, Architecture, and Evaluation

Ghazanfari, Mahyar
Casanova, Matthias
Kam, Jordan
Zongo, Alex
Wei, Peng
Darrell, Torsten
Alexandre Bayen
2026

Air traffic control (ATC) communication is a safety-critical dialogue that remains largely human-driven even as other parts of air traffic management have been semi-automated. In this article, we experimentally evaluate whether large language models (LLMs) can generate operationally realistic ATC transmissions. An experimental general-aviation flight flying over the San Francisco "Bay Tour" route is hand-transcribed and used as ground truth (P0). Through a pilot-in-the-loop process we design five prompt structures (P1-P5) of increasing constraint and embed them in a stateful multi-turn...

Mobile Apps and Transportation: Exploring Data Metric Potential and User Response to Multi-modal Traveler Information (UCCONNECT)

Susan Shaheen
Martin, Elliot
Adam Cohen
Musunuri, Apoorva
Bhattacharyya, Abhinav
2016

In recent years, technological and social forces have pushed smartphone applications (apps) from the fringe to the mainstream. Understanding the role of transportation apps in urban mobility is important for policy development and transportation planners. This study evaluates the role and impact of multimodal aggregators from a variety of perspectives, including a literature review; a review of the most innovative, disruptive, and highest-rated transportation apps; interviews with experts in the industry, and a user survey of former multimodal aggregator RideScout users. Between February...

Activity-Based Human Mobility Patterns Inferred from Mobile Phone Data: A Case Study of Singapore

Jiang, Shan
Ferreira, Joseph
Marta Gonzalez
2017

In this study, with Singapore as an example, we demonstrate how we can use mobile phone call detail record (CDR) data, which contains millions of anonymous users, to extract individual mobility networks comparable to the activity-based approach. Such an approach is widely used in the transportation planning practice to develop urban micro simulations of individual daily activities and travel; yet it depends highly on detailed travel survey data to capture individual activity-based behavior. We provide an innovative data mining framework that synthesizes the state-of-the-art techniques in...