Discription of Events: Man became angry after I turned in front of him in the lane he was in. Traffic was slim to none. I was needing to get over to the double turn lane and sat with my blinker for a good 15 seconds and he stayed at a consistent speed so I deciding instead of slamming on my breaks to get behind him to speed up a little and safely go around him. This angered him so much that as I was slowing down to stop at the red light he swerved around me to get back in front of me at the VERY last second. The inside turn lane was empty so I proceeded to move to that lane and he once again swerved to get in to my lane to block me. He sat at the light hovering both turn lanes until he sped off during a yellow blinking turn signal. This person has extreme anger issues and should not be driving.