"It's important to understand that in the Third World most driving is done with the horn, or "Egyptian Brake Pedal," as it is known. There is a precise and complicated etiquette of horn use. Honk your horn only under the following circumstances: 1. When anything blocks the road 2. When anything doesn't. 3. When anything might. 4. At red lights 5. At green lights. 6. At all other times."