Whilst rail systems can be environmentally friendly, the higher the speed of a system the more fuel said system consumes. Whilst high speed rail might be useful as a transport system, owing to its high speed nature it does not reduce carbon emissions to a significant extent. Further, high speed rail is of limited popularity and as such it will not get enough drivers off the road to have any significant contribution to the environment. [1]  [1] Staley, Samuel. “The Pragmatic Case Against High-Speed Rail.” Reason Foundation. 22/06/2009