Discription of Events: I was driving on 169 south and took my exit on 81st and several other cars as well. This car in front of me took the exit, we reached the light so we both stopped. The light turned green so he went so I decide to go as well thinking hes going to continue pass that light... but out of nowhere he slams on his breaks so I have to slam on my breaks which are not the greatest so I kinda have to swerve to the side a bit. So Im thinking wow like what is going on...so he goes again and acts like hes going to drive pass the light again so I decide to go behind him one more time thinking the first time was for a good reason , although there were no cars in front of them. At this point there is a line of vehicles behind me, then they do it again when I try following behind them he slams on his breaks and I try so hard not to hit him and at this point this upsets me so I honk at him...then he goes and slams on his breaks again. I dont know what this persons intentions where but I was not doing anything to them and Im sure everyone behind me was able to see what they were doing. I came so close to hitting his cars so many times and people behind me almost hitting me. I thi k this is not cool if he was playing games. But I was able to get his licences plata and got away from him to the other lane and he started passing cars and went into these apartments the Remington at memorial.