Dear Driver,
Tonight, I was just about to go through a green light when I heard an ambulance. I slowed safely and stopped as I couldn't see where the emergency vehicle was. YOU honked your horn at me, with quite a great deal of urgency, if I might add. It's simple. The rule is you safely stop and wait for the emergency vehicle screeching at you passes. I just wish people would relax, and not think the law applies to everyone but them.
And I am not saying where this happened. The drivers in this particular region of the US, known for their impatience and rudeness, deserve their privacy.