Research
Building a global database of real-world emissions to improve local air quality and mitigate climate change.
The TRUE Initiative collaborates with local governments, on-the-ground partners, and research institutions to gather and analyze real-world emissions data. These valuable insights help cities around the world as they seek to craft low-emission transportation policies and improve existing programs. These actions will provide effective actions to address the health and climate impacts from on-road vehicles.
Our methods for collecting and analyzing data drives action towards cleaner urban transport.
Explore our research
Report
Latin America
São Paulo
Assessment of real-world vehicle emissions in São Paulo
Remote sensing campaign measures real-world emissions of São Paulo’s fleet. …
November 6, 2025
PT
Technical Note
Latin America
Mexico City
Pollutant emissions from light-duty vehicles across North America: A comparative analysis
Comparative real-world emissions analysis between Canada, Mexico, and the United States….
July 29, 2025
ES
Report
Latin America
Mexico City
Assessment of real-world passenger vehicle and taxi emissions in Mexico City
Analyzes real-world emissions from vehicles in Mexico City through the TRUE Initiative….
July 4, 2024
ES