To ask the Secretary of State for Transport if he will publish revised projections for the Internal Rate of Return for the Heathrow, Gatwick and Stansted options presented in Table 14.11 of SERAS Stage Two Appraisal Findings report, taking account of the new maximum airport landing charges recommended by the CAA. 
[holding answer 1 April 2003]: The calculations, taking account of the new maximum airport charges for the period 2003–04 to 2007–08, are as follows:is available up to the year 2000. CO
2 emissions from the transport sector since 1990 are set out in the following table (all figures are given as megatonnes of carbon equivalents).
Figures given in this table are emissions "by source" and do not include emissions from the production of transport fuels and electricity. "Other transport" includes railways, domestic aviation and military aircraft, shipping, naval vessels and off-road sources. For further details, please see the explanatory notes in the National Atmospheric Emissions Inventory and in Transport Statistics Great Britain.
The Government have taken a number of steps in recent years to reduce total carbon dioxide emissions from the transport sector. Precise measures in place to reduce these emissions vary between different modes of transport. But in each case they essentially comprise some or all the following:
adopting more stringent technical standards to limit the emissions at source
supporting research and development to develop cleaner technology
applying economic instruments to encourage the cleanest use of existing technology and/or the purchase and use of new, cleaner technology.
On the road transport side, the Powering Future Vehicles Strategy, published in July 2002, sets out our plans for supporting the shift to low carbon vehicles and fuels, and sets ambitious targets for future sales of low-carbon vehicles. The Energy White Paper, published in February 2003, complements this Strategy and explains the further steps the Government are taking to improve the carbon efficiency of transport. Key measures include:
the graduated vehicle excise duty and company car tax systems, introduced in 2001 and 2002 respectively, which reward those who choose the most carbon-efficient vehicles;
fiscal incentives and other grants for low-carbon vehicles and fuels (including biofuels, which can deliver significant lifecycle carbon savings);
the setting up of a Low Carbon Vehicles Partnership bringing together key stakeholders from the automotive, energy and other sectors to help bring about a shift to low carbon vehicles and fuels;
working with the European Commission to develop further voluntary agreements with automotive manufacturers to deliver further reductions in new car CO2 emissions.