Biodiesel is a renewable energy, which is friendly to human, vehicle and environment. 生物柴油是对汽车、环境生态和人友好的可再生能源。
A new concept of digital driving system is proposed on basis of intelligent transport information network environment. The logic relations that control the input and output variable in human, vehicle and road environment system arte found out, after driving rules of the vehicle motion are analyzed. 提出了智能交通信息网络环境下的数字驾驶的概念,并通过分析车辆在行驶运动中的规律,寻求出人、车、路系统中控制变量输入输出之间的逻辑关系。
Traffic safety revolves many factors such as human, vehicle, road and environment. The analysis on the cause of traffic accidents ' formation suggests : the main factor consists in the responsibility of drivers, then the vehicle and road. 交通安全涉及人、车、道路及环境等诸多因素,对交通事故的成因分析表明,驾驶员的责任是主要影响因素,其次是车辆和道路因素。
In the four traffic elements ( human, vehicle, road and environment ), human is the major factor and plays a dominant role for his activeness and intelligence. 在道路交通4要素中(人、车、路、环境),人以其主动性和智慧性起着支配作用,是其中的主体要素。
Then the relationships between design speed, operating speed, limited speed etc. are expatiated. At the same time, analyzes the speed affected factors from the point of view of human, vehicle, road alignment, environment and management. 阐述了设计速度、运行速度和限制速度等多个速度相关概念之间的关系,从人、车、路、环境和管理五方面分析了车速的影响因素。