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
Mode of production Mode of production In the writings of Karl Marx and the Marxist theory of historical materialism, a mode of production (in German: "Produktionsweise", meaning "the way of producing") is a specific combination of the following: Marx regarded productive ability and participation in social relations as two essential characteristics of human beings and that the particular modality of these relations in capitalist production are inherently in conflict with the increasing development of human productive capacities. A precursor to this concept was Adam Smith's concept of mode of subsistence, which delineated a progression of society types based on the way in which