I was at a stoplight waiting to turn left. I got the green arrow light so I proceeded to follow the vehicle in front of me who also turned left, I was not following close to the vehicle and the vehicle in front of me did not brake. Then my cars automatic emergency brake engaged in the middle of the intersection while tuening left and casued the cars behind to crash and my back to be injured. I am very upset as this has happened on 2 other occasions where I did not track the mileage or insections. I called the dealer where I purchased the vehicle, Mungenast Honda in St Louis MO. They have yet to schedule me a service appointment, but I did ask for one.