actually, its not only motorcyclist but drivers in Penang that's one kind... they tend to drive like they own the whole bloody road (2 or 3 lanes of it).

turning without signaling, overtaking and cutting in and out of traffic just to get to the front of other vehicles and then slowing down, etc

The Jelutong Expressway bike lane is also "one of a kind"... sand, there are parts where the bike lane actually meets a junction where cars turn in and go out from a petrol station. Also... near Tesco, to get to a bike lane, the motorcyclist needs to cut through 2 lanes of traffic...