[Porsche-O-Phile]

You actually trust other drivers to use their turn signals at all?

You're lucky you haven't been clobbered yet.

I don't trust other drivers using turn signals at all - if they don't have 'em on, I still expect they might suddenly turn at any moment (and I'm not disappointed - I see it often). If they do have 'em on, I don't rely on them (and I'm not disappointed - many times I see a car approaching with a signal blinking as I'm getting ready to turn onto the street in front of them only to have them continue straight past me - if I'd relied on the signal and pulled out, I'd have gotten T-boned).

Bottom line is that there are a sufficient number of drivers out there who are literally too stupid to manipulate a turn signal device to the point I have ruled them unreliable as predictors of vehicle behavior (which arguably is their purpose, leaving them with no purpose at all).