Well take this for respect for law:: driver turns his right signal on and slows down, starts to veer to the right...

You think, ok, he wants to park on the right, I'm safe, I can pass. Then suddenly he swerves across the street. AH! He wants to U-turn!
(is this what you call a T-bone accident?)

I'd say it's not lack of logic but lack of basic morality... That went out the window long time ago here.