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道路曲线实际上不是一条简单的平曲线或竖曲线,而应该是一条自由舒展的空间曲线,它既能够满足行车的力学性能,又能满足线形连续、指标均衡、视觉良好、景观协调、安全舒适等要求。车辆在行驶过程中,存在一条曲率连续变化的轨迹,无论车速高低,这一轨迹线都是客观存在的,它的形式和长度则随行驶速度、曲率半径和司机转动方向盘的快慢而定。在诸多的交通事故中,大部分驾驶员出事故的原因是由于困难的行驶条件所造成的,道路的几何要素或线形组合不合理,都有可能导致交通事故的发生。为此,现针对道路线形和交通安全的关系进行论述,并探讨了合理的道路线形的设计与规划。
Road curve is not actually a simple flat curve or vertical curve, but should be a free stretch of the spatial curve, which can meet the driving mechanical properties, but also to meet the linear continuity, index balance, good vision, landscape coordination, safety and comfort Other requirements. During the driving process, there is a trajectory with continuously changing curvature. This trajectory is objective no matter the speed of the vehicle. Its shape and length depend on the driving speed, the radius of curvature, and the speed of the driver turning the steering wheel. In many traffic accidents, most of the drivers cause accidents due to difficult driving conditions, and the geometric elements of the road or the combination of linearities may cause traffic accidents. To this end, the paper discusses the relationship between road alignment and traffic safety, and discusses the design and planning of reasonable road alignment.