Abstract: The traditional adaptive cruise function can only complete the cruise speed control of the vehicle in a single lane, but can not carry out the active lane change more intelligently. To solve this problem, this paper actively cuts out the lane under the condition of calculating the minimum safe time distance, and uses CarSim/Simulink to conduct simulation verification under the conditions of 80 km/h. Results compared with the adaptive cruise system used by the current mainstream vehicle companies, the vehicle active lane change strategy based on adaptive cruise control (ACC) can meet the requirements of active lane change under the minimum safe time interval, and achieve a good effect of lane change under the set conditions.

Key words: Adaptive cruise control; Automatic lane change; Safe time-distance; CarSim/Simulink simulation

摘要： 传统的自适应巡航功能只能在单一车道内完成车辆巡航速度控制，而不能更加智能化 地进行主动换道。针对此类问题，论文通过计算最小安全车距情况下主动切出本车道，利用 CarSim/Simulink 在 80 km/h 工况下进行仿真验证。结果与当下主流车企使用的自适应巡航系 统对比，基于自适应巡航的车辆主动换道策略能够满足在最小安全车距下完成主动换道，且 完成设定工况下的换道效果良好。

关键词: 自适应巡航；主动换道；安全车距；CarSim/Simulink 仿真