Here's what each Indy 500 flag color means: Green ... Black flag with white cross: A driver receiving this flag has been disqualified, and the car will no longer be scored. Red and yellow ...

The BBC Horizon clip - which originally went to air in 1985 - has resurfaced online after being shared on Twitter by the BBC Archive, and depicts a green, yellow and black version of the flag.

Devon’s is of course green ... older than Devon’s. The flag is associated with Saint Peron, a sixth-century Cornish abbot, and early uses of a white cross and black background design dates ...

Starts off as a black field with a yellow saltire (also known as a Saint Andrew's cross). The saltire is taken from the ancient Mercian Flag. It is toothed here to represent industry and opposites ...