This is why, to me, filtering should be made illegal. Twice today whilst sat in a long, occasionally moving queue of traffic on the A303 I had bikers filter past me at stupid speeds that had I not been alert (likely after an hour in the heat) I would have hit as I accelerated (wheels at an angle). Cars make do without, why can't bikes?
*awaits the backlash *
Because most people filter safely and sensibly without issue?
Perhaps?