Well I am from Puerto Rico actually from Mayaguez on the west side of the island and to be true is a little crazy driving on the island.
Most of the time you will need patience and be carefull specially from those MORONS that try to drive and talk on there cellphone at the same time,
PEOPLE OF PR
THERE ARE BLUETOOTH HEADSETS YOU KNOW!!
For me the craziest place to drive on the island is San Juan, the people there are always late, there is no courtesy at all, is a shame because I am from Puerto Rico, but if you are going to stay close to San Juan is way better to get a taxi.