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
Three Turnings of the Wheel of Dharma Three Turnings of the Wheel of Dharma The Three Turnings of the Wheel (of Dharma) refers to a framework for understanding the sutra stream of the teachings of the Buddhism originally devised by the Yogachara school. It later became prevalent in modified form in Tibetan Buddhism and related traditions. The distinction is, on the one hand, a historic or quasi-historic scheme by which the Buddha's first sermons, as recorded in the Pali Canon and the tripitakas of other early schools, constitute the First Turning, and the later Mahayana sutras comprise the Second and Third turnings. The schema appears in the