What does it mean when the yellow light keeps flashing?

[KylieDella]

When the yellow traffic light at an intersection keeps flashing, it indicates that it will soon switch to a red light, reminding vehicles to stop in time. The relevant introduction to traffic lights is as follows: Function of traffic lights: Traffic lights are signals that direct traffic, generally consisting of red, green, and yellow lights. A red light means no passage, a green light means passage is permitted, and a yellow light means a warning. Classification: Traffic lights are divided into: motor vehicle signal lights, non-motor vehicle signal lights, pedestrian crossing signal lights, direction indicator lights (arrow signal lights), lane signal lights, flashing warning signal lights, and railway crossing signal lights.