You might recognise a couple, but do you know them all? I certainly did not.
GREEN
Track is clear.
YELLOW
Danger on track.
Single - drivers must reduce speed, no overtakes, prepare to suddenly change direction due to obstacle on/beside track.
Double - drivers must significantly reduce speed, no overtakes, prepare to suddenly change direction or stop due to obstacle/marshals on track.
RED
Session has stopped, reduce speed and return to pits.
BLUE
A driver is about to be overtaken - could be a driver being lapped in a race, a car on a flying lap in qualifying, or a fast car approaching a car exiting the pit lane.
CHEQUERED
Race has finished.
You’ve probably heard of those ones, but what about these…
RED & YELLOW STRIPED
Oil or water on track - slippery.
BLACK WITH ORANGE CIRCLE
Car has mechanical issues and must return to the pits.
BLACK & WHITE
Warning to drivers of unsportsmanlike behaviour
BLACK
Driver is disqualified and must return to the pits.
WHITE
Warns drivers there is a slow moving vehicle on track.
I’m surprised your dad didn’t get a red & yellow flag doing the Soviet F1 in Poland after his oil spill