before entering the pit speed limit I worked, I disabled the exit of pit speed limit .... and top left penalty appeared a sign (like drive through) ... how to get rid of penalty .. . car pit stops or passes through it
Maybe you are still entering the pits with too much speed, even with the limiter on. Make sure you brake before going through the line. Or maybe you are misjudging the correct lines of entry and exit. Some tracks are a bit confusing. Watch the AI pitting to find where those lines are.
I got DQed too yesterday during a single race. It showed a white icon with a curve and dotted-lines arrow (sorry, didn't get a screenshot). Anyone knows what it is? Perhaps we can find a list of the flags, for reference?
Sherpa, here's a list of real life motorsports flag rules. Maybe this helps a bit? Racing flags - Wikipedia, the free encyclopedia