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超车是车辆行驶过程中普遍存在的现象.超车时机选择不当或操作失误是交通事故频发的重要原因之一,在城市干道及高速公路上,不同车道的限速要求对超车行为提出了更高的要求.本文在以往研究的基础上,将整个超车过程分为换道、超越、并道三个阶段,添加不同车道的限速条件,以安全为前提,在一个超车时段内尽可能多地超越前方行驶车辆为目标,并充分考虑车辆跟驰行驶过程中的安全间距及超越行驶过程中超越车与被超越车行程之间的关系,建立一种新的超车模型,以供车辆在超车时提供判断及辅助,并通过一个算例来验证模型的实用性.

Overtaking Model Based on Different Limiting Speed

The process of overtaking is a common phenomenon. The improper selection of overtaking time or other risk operations in driving will probably lead to traffic accidents. However, different speed limit of lanes in urban trunk road or in highway proposes higher requirements for vehicles in overtaking operations. Based on previous researches, this paper divides the whole overtaking process into three stages. It sets different speed limit of for didderent lanes with full consideration of following distance. An overtaking model for judgment and auxiliary of vehicles is developed and the goal is the safe driving and to overtake as many as vehicles during a given time. In the last section, the paper verifies the practicality of the model by an example.