Unless of course you're in Belgium where all junctions are by default preference from the right (so like a mini-roundabout but with no markings), which are opposite preference from roundabouts here which are preference from the left. But some junctions are labelled, some aren't depending on whether the local council could be bothered, some people will forcefully use their preference and risk a crash but 90% will ignore it.

Driving in Belgium - the scripting equivalent of batch files