This working paper seeks to elucidate the current estimates for transport infrastructure requirements, looking at a series of reports that consider projected global infrastructure needs in the coming few decades, and provide or quote a cost estimate for these needs. The overall objective of this work is to compare “apples to apples” for current investment flows and investment needs, comparable to the global investment flows estimate of between $1.4 and $2.1 trillion annually. This paper projects a consolidated needs estimate of $2 trillion for a scenario of 2°C average global temperature increase by 2050 (2DS) and $2.3 trillion for a 4°C scenario (4DS).
