It was 4 in the afternoon, the car sped up from which I’m assuming was behind or the side of me, and swerved into the lane I was in suddenly making me hit my breaks, without using their turn signal. Once we were done on the main roads, they once again were swerving in front of other cars while changing lanes with no turn signal and were going at least 10 over the speed limit. I cannot remember what the making of the car was but I was gray.