Transportation Science

Ph.D. Interdisciplinary Studies · UC Irvine · 2026-2027 Catalog

R. Jayakrishnan, Director
949-824-2172
rjayakri@uci.edu
http://www.transci.uci.edu/

The interdisciplinary graduate program in Transportation Science at the Institute of Transportation Studies (ITS) includes faculty from five academic units: the Department of Civil and Environmental Engineering in the Henry Samueli School of Engineering, the Department of Urban Policy and Public Planning in the School of Social Ecology, the Department of Economics in the School of Social Sciences, the Department of Environmental and Occupational Health in the Joe C. Wen School of Population and Public Health, and the School of Law. Faculty from the Department of Computer Science in the Bren School of Information and Computer Sciences and the Paul Merage School of Business also support the program through courses and collaborative research at ITS.

The program is designed to educate students in a broad set of competencies and perspectives that mirror the actual state of policy, practice and research in a variety of areas involving mobility, transportation, and logistics. The students develop cross-cutting background by selecting study topics along policy, planning, technology, modeling, data science, economics, environment, housing, sustainability, legal, regulatory, business and social dimensions of Transportation.

M.S. and Ph.D. degrees are offered in Transportation Science.

Admission

Admission is limited to a small number of exceptionally talented, independent, and self-disciplined students. The deadline for application for admission is March 1 for the fall quarter. All applicants must take the Graduate Record Exam (GRE) prior to the application deadline. Applicants whose first language is not English must also submit Test of English as a Foreign Language (TOEFL) or International English Language Testing System (IELTS) scores.

Requirements

The Ph.D. program is a 48-unit program requiring a qualifying examination and dissertation defense.

Prior to the qualifying examination, students must have completed a minimum of 36 units of coursework, a replication project, or a publishable research paper as first author, and a dissertation proposal.

Requirements

Courses are selected from one of the four areas listed below.

Substitutions and exceptions must be approved by the student's advisor and the Director of the Transportation Science program.

The normative time for completion of the Ph.D. is five years and the maximum time permitted is seven years. Core courses must be chosen from lists in each of the four program areas. Each student must choose at least two graduate courses from Area 1 (Transportation Systems Engineering), at least one graduate course from each of Area 2 Urban and Transportation Economics) and Area 3 (Transportation Planning, and at least four additional graduate courses from any of those areas, or the Area 4 (Computer Science). At least five of the eight core courses must be transportation courses (indicated by an asterisk).

Students must complete the following general theory core courses:

CourseTitleUnits
Area 1 (Transportation Systems Engineering)
ENGRCEE 220ATravel Demand Analysis I
ENGRCEE 220BTravel Demand Analysis II
ENGRCEE 221ATransportation Systems Analysis I
ENGRCEE 222Transit Systems Planning
ENGRCEE 223Transportation Systems III: Planning and Forecasting
ENGRCEE 224ATransportation Data Analysis I
ENGRCEE 226ATraffic Flow Theory I
ENGRCEE 228AUrban Transportation Networks I
ENGRCEE 228AUrban Transportation Networks I
ENGRCEE 229ATraffic Systems Operations and Control I
Area 2 (Urban and Transportation Economics)
ECON 210AMicroeconomic Theory I
ECON 281AUrban Economics I
ECON 281BUrban Economics II
ECON 282BTransportation Economics II
ECON 289A-Z
Students can only count on ECON 289 course toward the required number of units.
Area 3 (Transportation Planning)
UPPP 202History and Theory of Urban Planning
UPPP 207Land-Use Law
UPPP 212Transportation Planning and Policy
UPPP 235Geographic Information Systems (GIS) Problem Solving in Planning
UPPP 237Introduction to Geographic Information Systems
Area 4 (Computer Science)
COMPSCI 206Principles of Scientific Computing
COMPSCI 248AIntroduction to Ubiquitous Computing
COMPSCI 260Fundamentals of the Design and Analysis of Algorithms
COMPSCI 268Introduction to Optimization
COMPSCI 271Introduction to Artificial Intelligence
COMPSCI 274AProbabilistic Learning: Theory and Algorithms
A. Pre-approved upper-division undergraduate courses:
ENGRCEE 121Transportation Systems I: Analysis and Design
ENGRCEE 122Transportation Systems II: Operations and Control
ENGRCEE 123Transportation Systems III: Planning and Forecasting
ENGRCEE 124Transportation Systems IV: Freeway Operations and Control
ECON 105AIntermediate Quantitative Economics I
ECON 105BIntermediate Quantitative Economics II
ECON 123AEconometrics I
ECON 123BEconometrics II
ECON 149Special Topics in Economics of Public and Private Organizations
I&C SCI 45CProgramming in C/C++ as a Second Language
I&C SCI 46Data Structure Implementation and Analysis
COMPSCI 115Computer Simulation
COMPSCI 121Information Retrieval
COMPSCI 122AIntroduction to Data Management
B. Independent study units
ENGRCEE 296Master of Science Thesis Research
ENGRCEE 298Special Topics in Civil and Environmental Engineering
ENGRCEE 299Individual Research
ECON 299Independent Study
UPPP 298Directed Studies in Urban Planning
UPPP 299Independent Study in Urban Planning
COMPSCI 298Thesis Supervision
COMPSCI 299Individual Study
C. Students who choose the thesis option may also take up to eight units of the following:
ENGRCEE 296Master of Science Thesis Research
UPPP 298Directed Studies in Urban Planning
COMPSCI 298Thesis Supervision

After approval from their advisor, students may petition the Director of the Transportation Science Program with requests for substitution of the required courses.

Replication Project or Publishable Paper

Students entering the program with an M.S. are encouraged to transform a course project or thesis from this program or an earlier one into a publishable paper. That paper could be sole-authored, or authored with a student's former or current faculty mentors. The dissertation supervisor and the Director of the Transportation Science Program must approve the replication project or paper prior to the date of the qualifying exam.

Prior to preparing a dissertation proposal, each student who has not completed a master’s thesis (or otherwise independently published) must replicate the empirical work of a published paper from a major transportation journal, chosen by the student and approved by the advisor. This replication may involve the collection of new data, the use of better statistical techniques, additional simulations, or the identification and correction of theoretical errors. Through the replication project, students gain direct experience in reducing a general problem to a manageable research project, in using data, and in carrying out a research project.

A replication project involves choosing an empirical paper, obtaining the data necessary to replicate the project and then replicating the project and describing the replication an any related extensions in a research paper. Such projects are most common in economics, but could also be done based on any of the four transportation science research areas.

Dissertation Proposal

Dissertation proposals differ across areas but a typical proposal would be 15-30 pages long and would include an introduction, a review of related literature, a plan for the dissertation research and an indication of the sorts of products that will emerge from the project (publishable papers, case studies, software, technologies, etc.). The proposal is not a binding contract, because research evolves, but it should provide the committee with sufficient information to judge the likelihood that the project will be sufficient to meet the requirements for a Ph.D.

Qualifying Examination

The qualifying exam must include five faculty members of which at least three members must be selected from the Transportation Science core faculty, and at least one of whom must be outside of that group. The qualifying exam is primarily an oral presentation of the dissertation proposal but might also include a discussion of other major research efforts conducted by the candidate and can involve questions from courses taken at UCI, or general transportation related questions.

Upon completion of the coursework and the publication or replication paper requirement, each student must develop a dissertation proposal defining the research problem, related literature, research methods, and data resources. The Ph.D. qualifying examination consists of an oral defense of that proposal before a candidacy committee chosen according to normal campus regulations, upon the recommendation of the Graduate Director. Typically, this is a committee of at least three members of the Transportation Science faculty and at least one faculty member who is not associated with Transportation Science.

Research Facilities

Research is coordinated at the UCI Institute of Transportation Studies (ITS), the home of the Transportation Science Program. ITS facilities include classrooms, remote teaching and seminar facilities and offices for faculty and researchers. ITS also offers extensive computer lab and software support. Approximately 30 to 40 graduate students have their desks at ITS and are employed as research assistants each year. Funded research projects at ITS in recent years have focused on topics such as: intelligent transportation systems; artificial intelligence (AI) applications in transportation; planning and analysis of transportation systems; transportation systems engineering, operation and control; travel behavior and demand forecasting; transportation safety and security; road and congestion pricing mechanisms; advanced sensor systems; electric vehicle systems; environmental and energy issues; agent-based modeling and simulation of traffic and activity systems; public transit operations; shared mobility systems and subscription services; land use and housing interactions with transportation; environmental justice and equity; community and social impacts of transportation; transportation economics, funding and finance; infrastructural, environmental, economic and regulatory policy in transportation.

ITS is part of U.S. Department of Transportation's University Transportation Center program regional consortium, one of 10 federally designated centers of excellence for transportation research. The Institute maintains a regular publications series documenting research conducted within its programs. UCI has an excellent library collection, as well as special inter-library loan arrangements with other University of California libraries including the Transportation Library at UC Berkeley.

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