In formula racing, there are many flag signals, among which the most common are yellow, red, and green flags.
Yellow signifies that there is an obstacle on the track, and drivers need to slow down; overtaking is prohibited during this period.
A red flag indicates that the race or test session is ended prematurely due to some reason, and drivers must return to the pit lane to await further instructions from the race organizers.
Green flags mean the track is clear and drivers can compete normally.
Now, a red flag has appeared on the track, meaning all cars must return to the pit lane.
The organizers take advantage of this time to send out engineering vehicles to remove the two damaged cars and quickly clear the debris on the track from the crash, to prevent tire punctures in the upcoming race.
Due to the slow speed during the warm-up laps, the damage from the collision is not severe, and it is quickly dealt with, allowing the organizers to announce the continuation of the race.
