Probably 5 seconds or so.

Generally three,four seconds unless the person was slow on the last light. Or I'm in a real rush (which I desperately seek to avoid)

But if I'm the slowpoke, I tend to wave/apologize.

Are you doing the polite double beep or the more aggressive held honk?

Depends on if I'm in a rush. If so, in about 1 second. If not, I'll wait a few seconds and then tap the horn unless I'm in a turning lane.

See for me if I can see head down clearly finger fucking a phone I'm honking at 2 seconds. I hate the phone finger fucker.

That's a given exception to civility.

A couple years ago, my wife, really quite a sweet woman in reality, was behind someone who did this at a light. Head down light turns green, guy does nothing. She honks, he doesn't move. She flies around, rolls down the window and screams "put down the goddamn phone and drive asshole!" at a man trying to reattach his oxygen tube.

I pull out my Constitutional AK-47 and shoot thier back window out after 1 second.

Been close to that myself twice or thrice.

1.8 seconds

My real pet peeve is dipshits driving slow in the left lane or letting oncoming traffic continue to turn after the arrow expires. I lose my shit.

A couple years ago, my wife, really quite a sweet woman in reality, was behind someone who did this at a light. Head down light turns green, guy does nothing. She honks, he doesn't move. She flies around, rolls down the window and screams "put down the goddamn phone and drive asshole!" at a man trying to reattach his oxygen tube.