It soon all became clear when someone mentioned the Tour de Rock. They were making a stop at the Oak Bay City Hall and the motorbikes were making sure it was safe I guess. Maybe putting on a bit of a show too.
The bikes pulled up, and they did a nifty little parking, got some pictures taken, then the Oak Bay mayor gave a quick speech, and presented a plaque. Soon they were off again, but it was quite comical watching the support police almost run into one another.