The Danish government's long-term Sustainable Transport and Infrastructure strategy has as one of its objectives to reduce CO2 emissions from road transport, combining initiatives on green car taxes, investment in public transport, intelligent traffic systems and new roads. The elements of the plan are to be implemented over the next 10-15 years, aiming for a thorough shift towards a sustainable transport system. For road vehicles, the government will undertake a fundamental restructuring of vehicle taxation to encourage the purchase of energy-efficient cars. This will be combined with a road pricing policy to make it more expensive to drive in urban areas during rush hour, thus increasing the demand for public transport. The strategy also supports the introduction of electric vehicles by introducing a tax exemption until 2012 and subsequent tax reductions in the following years to 2015.