Many motorcyclists ask (and many auto drivers ask) whether lane splitting is legal in California. Lane splitting is legal in California and has been for a long time. However, the California Highway Patrol–just in early 2013–has issued some guidelines about lane splitting, and the guidelines are that a motorcyclist should not split lanes:
1) If it’s dangerous and there’s cars cutting in and out
2) If traffic is moving at more than 35 miles an hour.
It’s a very, very complex subject and we have handled dozens of lane splitting cases and I’d be happy to help anyone with a prospective case think that issue through.