Are Railways Climate Friendly?

Abstract

Rail is usually considered to be a 'green' mode of passenger transport, at least 'greener' than the car and plane in terms of its relative impact on climate change.It is therefore only natural that rail will play an increasing role in meeting demand for transport when the aim is to reduce environmental pollution associated with transport operation.Yet, referring to rail as 'green' has many limitations and can be misleading.In this context, the paper aims to examine the environmental impact from rail transport and to show how the above generalisation depends on many different factors.Attention is focused on comparing between different trains (e.g.diesel vs. electric, and in the latter examining how environmental impacts depend on the sources used to generate the electricity) and different modes (train vs. car and plane).The paper also examines the scope for improving the environmental performance of rail through technical and operational measures.The paper concludes with identifying how and where rail can play a role in achieving a more sustainable transport system.

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