Mode of transport carries its own motor. As of 2002, there were 591 million automobiles worldwide. Other users of roads include motorcars, motorcycles, buses, trucks, bicycles and pedestrians, and special provisions are sometimes made for each of these. For example, the use of bus lanes give priority for public transport, and cycle lanes provide special areas of road for bicycles to use. Motorcars offer high flexibility, but are deemed with high energy and area use, and the main source of noise and air pollution in cities; buses allow for more efficient travel at the cost of reduced flexibility. Road transport by truck is
High-speed rail in the United Kingdom aiming to establish conventional high-speed wheel-on-rail technology as the mode of choice for new lines. The group has performed studies on routeing, environmental issues and the use of high-speed rail as an alternative to short-haul airlines. Currently it is proposing a new high-speed line between, at first, London and Birmingham. This is tentatively called High Speed Two. It was reported in August 2006 that London and Continental Railways (the developers of HS1) was to put forward a high-speed rail scheme to the Department for Transport this autumn. Its scheme would cost between £12 billion and £19 billion depending on the