Environment Group

Air Quality and Environment Division

The Air Quality and Environment Division is under TTI’s Environment Research Group.

What We Do

Lead with Expertise

We are experts in transportation energy and its impacts on human and environmental health.

Address Transportation Air Quality

Our team addresses transportation air quality in the broader context of sustainability, health, transportation electrification and decarbonization.

Partner Across sectors

We serve a range of sponsors in the private and public sectors, including federal, state and local transportation agencies.

Aerial view of a rail yard with multiple train tracks, freight trains, industrial buildings, and a surrounding urban residential area.

Our Focus Areas


Sustainability

Health

Clean Energy

Electrification

Decarbonization

Mobility


Our Work


Histogram with two overlapping distributions, green and red, showing PM2.5 concentrations; dashed lines at 19.60 μg/m³ (green) and 23.68 μg/m³ (red) mark mean values.

Environmental Modeling Program

The Environmental Modeling Program investigates the environmental impacts of transportation systems through innovative analysis of environmental and mobility data. Our work enhances the understanding of the complex interactions between mobility and the environment.

Multiple Do Not Enter and Wrong Way signs are posted at the entrance to a highway off-ramp, with cars traveling in the correct direction on the adjacent road.

Mobile Source Modeling

The Mobile Source Modeling Program has extensive expertise in data analysis, energy inventory development and air quality modeling. Our research team works on energy and dispersion models, including regulatory energy inventories.

A man in a blue shirt charges an electric vehicle at a ClipperCreek charging station in a parking lot.

Clean Energy Program

The Clean Energy Program focuses on advancing clean energy technologies, transforming infrastructure, and exploring the impacts and applications of innovative alternative fuels. 

The Team


our Leaders