If you are the "gringo" (non Dominican) and involved with a Dominican in an accident 99% of the time it will be your fault and you will pay lots of $$. You will pay for his medical, loss of his moto and god forbid he dies you will pay his family for his death.
It does not matter if he was speeding, going the wrong way on a one way street, ran two stop signs and has no working headlights. You will most likely be at fault.
I actually have a friend who was parked (in a legal spot) eating lunch in the restaurant next to where he was parked and a moto hit his car. He refused to pay and they went to court....findings: If he had not parked there his car would not be hit. Now pay the guy! True story
Bob K