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Asphalt

Volume 475: debated on Tuesday 6 May 2008

To ask the Secretary of State for Transport what the (a) quantity and (b) type is of fossil fuels used to extract, refine and manufacture each metric tonne of road-quality asphalt used on roads. (202511)

This information is not collected centrally. The Highways Agency has developed a framework for calculating the carbon footprint across all of its operations, including asphalt, and this is being applied this financial year. We have asked the UK Roads Liaison Group to consider what further research and advice will be helpful to local authorities.

To ask the Secretary of State for Transport what estimate she has made of the level of carbon dioxide emissions per metric tonne of road-quality asphalt from (a) all stages of its manufacture for use on roads and (b) the process of laying on to road surfaces in the latest period for which figures are available; and what assumptions are made in each calculation. (202512)

No specific estimate has been made of the levels of carbon dioxide emissions associated with the asphalt used for roads. The Highways Agency is developing a whole life value assessment tool for highway pavements which will include carbon dioxide emission calculations. It plans to implement this tool as part of its Sustainable Development Action Plan. We have asked the UK Roads Liaison Group to consider what further research and advice will be helpful to local authorities.