While not explicitly legal (ie there's no law against it), it is tolerated in CA. The CHP, recently gave guidelines on how to do it properly, thus giving it legitimacy. There are explicit laws in the books, however, that make it illegal to block a riders path and endanger the rider. So for all intents and purposes, it is legal in CA within limits, but no other state to the best of my knowledge. And certainly not like the subject of this video.Is lane splitting legal in the USA? I have always waited in traffic around here, traffic isn't very much out here on the great Plaines.