We propose a vision-based warning system for the maintenance personnel working on short-term construction sites. Traditional solutions use passive protection, like setting up traffic cones, safety beacons, or even nothing. However, such methods cannot function as physical safety barriers to separate working areas from used lanes. In contrast, our system provides active protection, leveraging acoustic and visual warning signals to help road workers be cautious of approaching vehicles before they pass the working area. To decrease too many warnings to relieve a disturbance of road workers, we implemented our traffic flow check algorithm, by which about 80% of the useless notices can be filtered. We conduct the evaluations in laboratory conditions and the real world, proving our system's applicability and reliability.

翻译：我们为在短期建筑工地工作的维修人员建议一个基于愿景的预警系统。传统解决方案使用被动保护,如设置交通锥、安全信标或甚至什么都没有。然而,这些方法不能作为物理安全屏障,将工作区与旧车道分开。相反,我们的系统提供积极保护,利用声学和视觉警告信号,帮助道路工人在通过工作区之前谨慎地接近车辆。为了减少过多警告以缓解道路工人的干扰,我们实施了交通流量检查算法,通过算法可以过滤80%的无用通知。我们在实验室条件和现实世界中进行评估,证明我们的系统的适用性和可靠性。