As a former driving instructor I can tell you that signaling isn't always for the car that you can see ...
I tried to get a left lane bandit to move over to the right lane, pointing at the "Slower Traffic Keep Right" signs as we drove by, finally messed with his mind by signaling that his speedometer was reading 10 mph too slow (it wasn't)!
Brent , I mean that when you`re by yourself on the road....or in cases you come up upon a slower car...you signal left , as you pull out behind him to pass, you pass , maybe 15 mph faster...then I may not signal as I go back....its "expected " that you go back to your lane...imo... but also imo, its useless as some do ,turn the signal on at the same time as they turn...too late...at that point you already know the car is turning ,that what I mean by "the right to turn signal"...
or people that as you approach them at 15 , 20 mph faster ,they just turn the signal on and pull out in front of you.... I learned in driving school (1960) that faster traffic has the right of way...you dont just pull out into faster traffic..you wait, then pull out after they pass...
imagine an American driver with that habit on Autobahn...he`d get killed by the guy in the left lane coming at 150mph...
