Los Angeles Drivers, Boo

[Bazbro_imp]

Here in the UK, "lane splitting" is legal and pretty universal.
The potential dangers are obvious and it's not normally done at any great speed, apart from the idiots (but I suspect that's just the "Darwin Effect" at work!).
It's most often done in stationary or near-stationary/slow moving traffic and greatly speeds the flow of two-wheelers going home after work!
Every motorcyclist is well aware of what could happen and most assess each overtake properly. Car drivers, for their part, often move over or keep across to allow the motorcyclists to pass. There isn't often aggression or bloody-mindedness.