Basically, the language is as follows: A red border on the sign is the beginning of something "not allowed" (no parking) or of some limitation (maximum speed l

Basically, the language is as follows: A red border on the sign is the beginning of something "not allowed" (no parking) or of some limitation (maximum speed limit 50 km/h). Those signs are round. The limitations are lifted when you see a similar black and white sign, usually barred. If the sign is triangular with a red border, it means some danger is coming up. If the sign is a blue background (only, no red border) it's an obligation to do something (must turn right). Square blue background is usually some kind of "information". Like "parking". You don't have to park. But you may. Sometimes, this information may have other implications, like "one way road, going your way". You don't have to keep moving. But you know no one will be coming from the front.