The car in front of me did not put brakes on or slow down and hit a car that was slowed to a stop in front of her. I was behind her and hit by brakes and tried to avoid the collision. My brake assist did not work; my car did not alert me and did not try to help me stop. I was told when i bought the car that it did indeed have these safety features which failed me. I was not sited in the accident even though i did end up hitting the car in front of me which was now attached to two cars in front of her. She was at fault and the car she hit had video footage to prove her fault.