It is surely impossible to have enough posts about the driving behaviour of Puerto Ricans, so here is another one. The graph below shows how many drivers spend most of their time at a particular speed, with zero being whatever the speed limit happens to be.
The green area on the left covers about 50% of all Puerto Ricans, who insist on driving very slowly but, as if to compensate for the automatic safety benefit this could bestow, not at all carefully. In classic Puerto Rican fashion, these people place no value on their time or the time of anyone else unlucky enough to be caught behind them.
On the motorway this manifests itself as the Puerto Rican roadblock, a common occurrence where two cars drive alongside each other at exactly the same speed, regardless of the number of people behind them or how fast everyone else is going. Lane discipline might as well be the Loch Ness Monster over here.
The green area on the right also covers about 50% of all Puerto Ricans, who, in classic Puerto Rican fashion, just like driving really really fast, everywhere. And they don't compensate by driving more carefully, because if you're ahead of them they tailgate with extreme prejudice . The idea that something unexpected might happen apparently being a wholly novel concept.