Everyone recognizes that lane-splitting is a way for motorcyclists to save time, which may be why car-bound motorists sometimes resent it. In its defense, lane-splitting also reduces congestion and actually helps everyone get there sooner. In effect, it creates an extra lane. That "motorcycle-only lane" can, as Hurt points out, get you away from the antics of cars, which tend to be most violent at the back of the line. I was originally a reluctant lane-splitter myself, but after diving between lanes to escape screeching cars coming up behind me three times in a single ride, I decided that perhaps there was a cosmic message in there somewhere. That was 25 years ago, and I have been lane-splitting, mostly on a non-emergency basis, almost every day since.