|Yes, it's legal to split lanes|
In the Los Angeles Area, the one constant is traffic. For you east-coasters take the Leesburg (VA) pike in traffic, or sit on the freeway between Manhattan and Long Island, and you will feel the pain as well.
I was in Pasadena on Friday, dealing with issues associated with a company that I helped found that is presently not doing all that well and a meeting that started at 1pm, sadly for me, ended at 5pm. That means a three hour drive home in a car with LA traffic, or an hour and twenty minutes on a motorcycle, splitting traffic...such are the advantages.
Log Item: The kid with the Ducati Monster that I reported on May 23rd has been conspicuously absent from the streets, riding without helmet, gloves or boots. I walked down to his grandparents home and rang the bell. His grandmother explained that he crashed his bike into a curb/tree/block wall (no motorcycle license) a bit more than a week prior and it put him in the hospital. She ushered me up to his room where he was recovering from a broken leg and broken arm. It could have been worse.