开道车会闪烁什么样的警示灯光?What kind of warning lights will the road truck flash?

Red红色
红色Red
Red and blue红蓝双色
红蓝双色Red and blue
Yellow黄色
黄色Yellow
Yellow or yellow-purple dual-color黄色或是黄紫双色
黄色或是黄紫双色Yellow or yellow-purple dual-color

红色是救护车或消防车,红蓝双色是警车,纯黄色是道路施工和维护车辆,开道车通常都是黄紫双色的