Public Transportation on Puerto Rico is called Publicos. Publicos are cars
and minibus that serve all the main towns of Puerto Rico and are
the cheapest way around the island. Publicos pick up and let off
passengers both at designated stops or even when someone flags them
down with a wave of their hand. Publicos usually operate during
daylight hours. Their license plates have the letters "P"
or "PD" following the numbers which let you know that
these automobiles are apart of Puerto Rico’s public transportation.
Fares vary according to whether the publico will make a detour to
pick up or drop off a passenger at a specific location. Fares from
San Juan to Mayagüez range from $14 to $34; from San Juan to
Ponce, from $20 to $32. A reminder, even although prices of publicos
are low, the routes are slow, with frequent stops, often erratic
routing, and lots of inconvenience. If you are going to travel by
other modes of transportation remember that the road signs in Puerto
Rico are all written in Spanish!