Go to most Asian countries and lane splitting is and has been the norm for a very long time. I find it commendable how so many people can get from A to B with little aggression and a lot of cooperation from other road users. Here in Western Australia lane splitting is legal if done correctly. You can only pass on the drivers side within the same lane, not overtake on the inside (passengers side). I find it safer to filter when the traffic is at or near to stopped so I can get ahead away from cars. I find a lot of drivers here inconsiderate, rude, brainless and in a lot of cases more dangerous than moving around in Asian countries.