Governments around the world are recognising that a ‘carbon-constrained future’ lies ahead, and that leadership is needed to transition economies to low carbon operation, especially in the area of public procurement. By the end of 2014 the world’s largest economies had set ambitious greenhouse gas emissions targets with:

Road agencies face growing pressure to respond to issues related to climate change, resource shortages, and shifting transport mode preferences. A key part of this response will be to reduce the dependency on fossil fuel based energy (and the associated greenhouse gas emissions) of transport infrastructure. As part of the Sustainable Built Environment National Research...