What does it mean that the electronic police camera flashes three times in a row?

Blinking three times in a row is mainly for speed measurement. For example, when crossing a traffic light, I accidentally ran a red light, but I found it right away. At this time, the right thing for you to do is to stop immediately. As long as you don't take three pictures at this time, even if you take two, it's not a red light! ! ! Grab it!