公路交通比起轨道交通、海上交通、空中交通,具有交通工具类型繁多、道路不确定因素大、交通规则多变等特点,可以说是最为复杂的交通系统。交通行业应该说是一个很大的行业,从大的层面来说可以分为公路交通、轨道交通、海上交通、空中交通等。其中公路交通比较特殊,它比起轨道交通、海上交通、空中交通,具有交通工具类型繁多、道路不 Compared with rail transportation, maritime transportation and air traffic, highway traffic has the characteristics of many types of vehicles, large road uncertainties and changing traffic rules, which can be said to be the most complicated traffic system. Transport industry should be said that a very large industry, from a large aspect can be divided into road traffic, rail transit, maritime transport, air traffic and so on. Among them, the road traffic is rather special. Compared with rail traffic, maritime traffic and air traffic, it has many types of vehicles, roads are not