Discription of Events: Unsafe changing of lanes in the freeway going north bound 405 merging into 710 south fwy. Swerved lanes suddenly without signaling going over the curb divider on the freeway about an inch about to hit my car if I didnt step on my brakes so hard. I was shaken and scared. The driver of the Honda Accord didnt even bother to roll his windows down to check or apologize for his behavior. Incident was recorded on my dash cam.