Trams traverse the traffic lanes at three points, as well as one making an immediate left turn exit. There are four traffic lanes. Royal Parade has inside lanes and service lanes.
But I also don't have to imagine that at all, those are common here too and I've never had a problem at them:
Notice how the approaching lane at the bottom left has an artificial curve added to it? It's traffic calming to help slow down cars before they get to the roundabout itself.