Puerto Rico

• The Puerto Rico Road Trip Photos
  
  This web site include many examples of signage and other scenes. ...
  http://www.hawaiihighways.com/Puerto-Rico-page1.html

• The PRroads
  
  Our website dedicated to the Puerto Rico road system with pictures and info, as well as the three unsinged interstates. ...
  http://www.freewebs.com/prroads/

• American Association of State Highway
  
  AASHTO is a nonprofit, nonpartisan association representing highway and transportation departments in the 50 states, the District of Columbia, and Puerto Rico. It represents all five transportation modes: air, highways, public transportation, rail, a ...
  http://www.transportation.org/

• Interstate Guide
  
  The allure of the open road beckons. Interstate Highways create the backbone of the American roadway network. Interstates facilitate the movement of goods and services and allow for high speed travel from one coast of the country to the other. In add ...
  http://www.interstate-guide.com/