Please give me a practical tutorial on filtering. Although I am Australian I have never used a bike anywhere in Oz for more than a couple of days. What is the practical situation with filtering, in each Australian state? I don't mean an argument of the legality or of filtering, I mean for practical purposes, can you routinely filter without encountering any problems? By filtering, I mean filtering either standing or moving traffic. And I mean only filtering, not crossing stop lines on red lights to get all the way to the front, not overtaking on double lines, not using bicycle lanes, not crossing solid white lines.