I've lived in AZ for nearly 20 years now and it still bugs me when people sit at a green light.
And I really do miss better public transportation and better highways.
And turn left only arrows.
Oh, we have left turn arrows, but the snowbirds get really confused by them... guess a lot of states don't have green turn arrows for some reason... biggest thing here, in the winter, is sit for a minute and make certain they are going to stop before you proceed through a green light.