PLima785
looks like is a place that you can ask the driver of the bus to stop or wait for one but is from the company "maré de Matosinhos" check here https://www.google.com/maps/d/u/0/viewer?mid=1wJvAl3xqlvGuKZNTP-YELxsRpiFJrfDD&ll=41.18513867841997%2C-8.662879545653961&z=19 