In AZ a red light is conditional. If there is no traffic within 500 feet (I think, maybe 1000?) you treat it like a stop sign. Stop, Look, Go. Most people don't know about the law, and are surprised when I do it. My driving instructor told me about it when I was a pup.
It just makes sense to me. I've always done it like that where ever I am, never had any problems. I thought it was like that everywhere.