公交车进入21世纪以来,人们对环境问题认识加深,意识到交通拥挤和空气污染的烦恼是由私人小轿车造成的,一致认为要“优先发展城市公共交通”。另外,随着消费者需求的增长,使城市公交车高档化、环保化趋势的日趋明显,城市公交线路逐渐转向大型豪华高档客车。根据这种趋势,长城公 Since the arrival of buses in the 21st century, people have become more aware of environmental problems. They are aware of the problems caused by traffic congestion and air pollution caused by private cars. They agree that “priority should be given to urban public transport.” In addition, with the increase in consumer demand, the city bus upscale, environmental protection trend is becoming increasingly evident, the city bus lines gradually turned to large luxury cars. According to this trend, Great Wall public