Road reminding method, device and system and control equipment

The invention provides a road reminding method and device and a navigation system. The method comprises the following steps: acquiring predicted arrival time of a vehicle driving out of a target exit of a current planned driving route to a destination; acquiring detour arrival time for the vehicle to arrive at the destination according to the re-planned route when the vehicle misses the target exit; judging whether the difference between the detour arrival time and the predicted arrival time is greater than a detour time difference threshold value or not; and if the difference between the detour arrival time and the predicted arrival time is greater than or equal to the detour time difference threshold, generating a warning signal for prompting the importance of the target exit. 本发明提供一种道路提醒方法、装置及导航系统。该方法包括获取车辆从当前规划行驶路线的目标出口驶出到达目的地的预计到达时间；获取在所述车辆错过所述目标出口时按重新规划路线到达所述目的地的绕路到达时间；判断所述绕路到达时间与所述预计到达时间之差是否大于绕路时差阈值；以及如果所述绕路到达时间与所述预计到达时间之差大于或等于所述绕路时差阈值，则产生用于提示所述目标出口重要性的警告信号。