Minibuses - often from the countryside and rarely with functioning indicators or drivers with brains. But they know all other vehicles are worth more than their junk-heaps, so we all give them plenty of room.
Black Santanas - a very common car here and, for some reason, always driven by idiots. Steer clear and expect random braking.
White-Plates - private cars belonging to soldiers, police, leaders, etc get a special white registration plate [see photo]. The rules of the road genuinely do not apply to them, as they will never get stopped, fined or prosecuted by the traffic police. So they happily drive through red lights, up one-way streets the wrong way, down bus lanes, etc. Any accident involving a White-Plate is always the other person's fault, and don't they know it. By far the worst drivers in China.