I know there has been discussion on this forum in the past about this issue, but don't know if anything has changed recently or how people deal with it.
We're planning on renting a car in Lisbon for a 4-5 day loop around Southern Portugal, returning the car to the Lisbon airport before our flight home.
How do toll roads work? I saw the issues with the automated system in the South (A22) highways. Has that been addressed for rental cars? Is the same issue present on other highways in the country?