Speed Limit Advice?
Nope. Advisory speed signs are black and yellow.
Another clue Thursday...
It was thursday when you posted it
I know, I know. I didn't want to confuse you by saying "tomorrow".
And anyway, I live by the earth's rotation, and it was only 12:04 AM, not that other artificial number you see
So I waited for the afternoon to make you even crosser!
ST2UP got it.
He's correct, the registered name is SLSA, but it's generally known as SLA.
Go Chris!!