Discription of Events: 5/26/19 Driver was on the phone and cut across solid white off ramp markers, unexpectedly cutting me off forcing me to slam on my brakes while CHP was about 50 feet up to the right dealing with a huge accident. After honking at the driver for being reckless, he then tried to brake check me 3 times with CHP right there, never even removing the phone from his ear.