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Carbons Emissions: Railways

Volume 713: debated on Tuesday 27 October 2009


Asked by

To ask Her Majesty's Government what information they use to assess the carbon dioxide emissions of the railway system in comparison to the same volume of traffic on a motorway. [HL5838]

The Department for Transport uses a timetable-based environmental model to estimate the carbon dioxide emissions of rail services. The model has been calibrated using industry data on rail diesel and electricity consumption.

Road transport carbon dioxide emissions are estimated using the department’s national transport model. The model uses projections of GDP, population, employment, oil prices and vehicle efficiency to produce estimates of key road traffic metrics, including total vehicle kilometres driven and carbon emissions.