International Transport Forum Discussion Papers

ITF Discussion Papers make economic research, commissioned or carried out in-house at the International Transport Forum, available to researchers and practitioners. They describe preliminary results or research in progress by the author(s) and are published to stimulate discussion on a broad range of issues on which the ITF works.

English, French

The Billion Dollar Question

How Much Will it Cost to Decarbonise Cities’ Transport Systems?

This paper puts numbers on the investment needs for urban transport infrastructure under different policy scenarios. The cities of the future will be shaped by today’s decisions about physical transport assets, and the urgent need to halt climate change makes it more important than ever to get it right. The analysis shows that a low-carbon transport system is not necessarily more expensive than today’s mobility system, and can even be more cost-efficient.


This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error