Planning a road trip in Brazil? Go to this website to determine what the tolls will be. We have yet to travel on these roads, but I've heard that the toll roads are in much better condition and make for better traveling. The website is in Portuguese, but it's pretty easy to navigate--just put in your departure location, destination and click "Traçar Rota." Then you confirm the locations (if there are more than one city with the same name), and it will give you the cost for a one way trip.
9 months ago