Had two incidents minutes appart today. On a 40mph road I was doing 40mph and was slowing down to the traffic lights behind a blue ford focus. Then all of the sudden the ford focus hit the brakes harder and fully stopped with a distance of 3 cars away from the next car. I almost hit him and I heard my car beeping as well as i got very close to him. I dont know if he was looking for someone to scrap his car or something 
After that I was in the 3rd lane on the round about and noticed something red approaching me from the 2nd lane on my left, i slowed down to almost a stop and the lady got infront of me and straight into the 4th lane without indicating nor checking if she was going to hit someone.

After that I was in the 3rd lane on the round about and noticed something red approaching me from the 2nd lane on my left, i slowed down to almost a stop and the lady got infront of me and straight into the 4th lane without indicating nor checking if she was going to hit someone.