They are known, through some mystic process, only to Dominican drivers and foreigners who have been here long enough to learn them. Here they are, listed in no particular order of importance. Use your horn a lot, for any reason or no reason at all. Blast the guy in front of you for stopping for a red light. In a traffic jam, lean on that horn and add all the racket you can to the general confusion.
Patience is a sign of weakness.
If there is a vehicle in front of you, pass it. Even if you are a guagua driver and you are going to pull over and stop as soon as you have passed the other vehicle. If you are a male driver, never let a female driver pass you. A real man can't put up with that kind of nonsense. Don't make left turns.