The unique challenge of a Belgian junction

Belgium is one of the last places where the priorité à  droite rule still applies to traffic (more from Marko and Expatica) - i.e. when on any road you should give priority to traffic joining from the right. If you're on a major thoroughfare and there's a piddling side-road to your right then step on the brake and let that car in from the side road. That's unless of course there's a sign telling the driver on the side road to give way, but if you're on the main road then how do you know what signs the other driver can see? So you better slow down anyway.

Add some further complications, like speed bumps, or junctions with many roads coming together at the same place (there's a brilliant 5-way star junction on rue Bonneels in St Josse) and it becomes a game of nerve. No-one seems to know whether you should give priority to the traffic from the second road on the right, and I personally make it even more confusing by being a cyclist - is it even worth stopping for someone on a bike? Add to that the multi-national confusion of Brussels, pot-holes in the cobbled streets, and the fact that anyone over about 60 on the roads in Belgium has never had to pass a driving test and it makes driving (and particularly cycling) in Brussels a unique challenge. I wonder whether they have ever done studies about the number of accidents that happen as a result of all of this? At least I haven't been hit yet...