Good explanation, Scott. Particularly that on the red flag. I've seen some stupid stuff done at schools when the red was thrown. Things that got the student chewed, at best, and things that got him failed.
Also, heads up on a white flag. Until you see it, you don't know whether it's a slow moving race car or an EV of some sort. Usually, an EV will be covered by a yellow flag at the preceding corner, but not necessarily.
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