In Portugal the transit is made by the right side. In the squares, intersections and junctions, unless signaled otherwise, the vehicles that appear on the right have priority. At intersections with roundabouts the vehicles that are already circulating in the interior have priority.
Traffic signs comply with international standards.
The seat belt is always compulsory.
The use of mobile phones is prohibited, unless speakerphone or headset devices are used.
Blood alcohol level equal or greater than 0.5 grams / liter implies driving ban.
Legal penalties must be paid on the place.