Discription of Events: I had signaled to change lanes and the woman driving this vehicle sped up not to let me pass. But then slowed down because of traffic and I signaled again to change lanes which she allowed me to do. She then proceeded to follow me, quickly changing lanes between traffic and right as I was slowly stopping because of upcoming traffic swerved into my lane making me slam on my breaks and have my seatbelt press hard against my chest and my neck whiplash. She then pulled up next to me and showed me the middle finger. Extremely dangerous driving and road rage that could have severely injured multiple people.