Split in the CA motorcycle lane between the #1 and #2 lanes only. Ride in a gear that allows you to accelerate quickly if the gap is closing. Cover the brake. Move around slightly while filtering in slowing traffic. People might see you. Watch for other bikes when leaving a lane to split. If you don't make it to the front stay where you are as traffic starts moving, then pull in to whichever lane isn't occupied. There's no need to pull in front of the car in the front of the line unless a bike is following you. Don't do it if you're not at 100% If a car moves over for you, give em a wave if it's safe to do so.