Marianne Hatzopoulou


Canada Research Chair in Transportation and Air Quality
Head of the Transportation and Air Quality research group

Visit the Facebook page of the Transportation and Air Quality Research Group 

The research of the TRAQ research group was recently featured in the documentary Something in the Air, The Nature of Things:

Marianne Hatzopoulou1

Marianne Hatzopoulou
Department of Civil & Mineral Engineering
University of Toronto
35 St. George St.
Toronto, Ontario
Canada, M5S 1A4

Tel.: 416-978-0864


My research area bridges between transportation and environmental analysis; and my main expertise is in modelling of road transport emissions and urban air quality as well as evaluating population exposure to air pollution. I am interested in capturing the interactions between the daily activities and travel patterns of urban dwellers and the generation and dispersion of traffic emissions in urban environments. I lead an active research group focusing on modelling traffic emissions and near-road air quality as well as near-road air pollution monitoring and characterization.


BSc (Physics, American University of Beirut, 1999)
MSc (Envtal Technology, Civil Eng., American University of Beirut, 2001)
PhD (Transportation Engineering, Civil Eng., University of Toronto, 2008)
Postdoctoral training (University of Toronto, 2009)
Postdoctoral training (Massachusetts Institute of Technology, 2010)

Research Interests

Traffic-Related Air Pollution

Urban Air Quality

Transportation Engineering

Transportation Planning


Zhiqiang Zhai, PhD, Post-doctoral fellow 


Jad Zalzal, PhD Candidate

Arman Ganji, PhD, Research Associate

Emily Farrar, PhD Candidate



Marc Saleh, PhD Candidate

Keni Mallinen, MASc Candidate

Research in Images

UrbanScanner platform for measuring air quality and capturing images of the urban environment developed by TRAQ group in collaboration with industrial partner

PEMS (Portable Emissions Monitoring System) testing of exhaust for a gasoline direct injection SUV while driving in Toronto

Distribution of ambient NO2 across the Montreal Island

Distribution of Black Carbon levels across Toronto

Distribution of ultrafine particles in Toronto

Black Carbon across cycling routes in Toronto

Ultrafine particles along cycling routes in Toronto

Testing Aeroqual S500 sensors againts fixed station (RSQA) in Montreal

Thesis Abstracts for TRAQ Graduates (MASc and PhD)



Course CodeTitle & DescriptionSessionDay(s)Start TimeEndSection
Fall 2020Friday11:0012:00LEC 9101 SYNC
Winter 2021Friday12:0013:00LEC 9101 SYNC
Not offered in 2020-20210101
CME261HFall 2020Scheduled by the Office of the Faculty Registrar.


Modelling the health benefits of electric cars

Electric vehicles are often touted as a means of mitigating climate change, but a new modelling study suggests that their public health benefits may be just as significant. “Local air pollution within urban environments is highly detrimental to human health,” says Professor Marianne Hatzopoulou (CivMin), who led the research. “When you have an electric vehicle with no tailpipe emissions,… Read more »

CivMin students Alaa Itani and Junshi Xu among DiDi Graduate Awards

  Two CivMin students are among ten University of Toronto graduate students who are receiving DiDi Graduate Awards in recognition of their contributions to the fields of artificial intelligence, vehicle autonomy, transportation analytics, human-machine interfacing and related topics. They are the first U of T students to receive scholarships from Beijing-based Didi Chuxing, the world’s… Read more »

A streetcar stops on King Street in Toronto. A section of the busy east-west street travelling through downtown Toronto has restricted car traffic, and U of T Engineering researchers are collaborating with the City of Toronto and the Toronto Transit Commission to study the pilot project’s effects. (Credit: Billy Cabic via Flickr under creative commons license)

Crunching the numbers on Toronto’s King Street transit pilot

Toronto’s King Street transit pilot project aims to improve transit reliability, speed and capacity, along with a number of other measures included in a comprehensive evaluation and monitoring program. For a team of researchers, it also presents an ideal opportunity to study the effects — both direct and indirect — of traffic changes on air and noise pollution,… Read more »