I don't lane split, but when its 30c+ outside and there is stand still traffic at a light I do filter quite often. I was filtering on Brant street the other month when there was that huge accident on the QEW near the skyway. Filtered past 2 cruisers and they didn't do anything. I have had friends that have had that "OH SCHIT" moment while filtering past a cop and they haven't bothered doing anything about it (maybe because they can't move in the traffic and just see you go bye-bye). I don't believe that lane splitting is safe here in the GTA, or Canada as a whole, but I don't see anything wrong with filtering. If the cars can't move, what are they gong to do....open a door to knock you off your bike and damage their own vehicle? Highly doubtful.