I had something happen while driving yesterday that I didn't know my AP2 model S could do. Was driving in a construction zone around 60mph. Concrete barrier on the left was basically in my lane. I was hugging it pretty close, as the lane was narrow. Car, apparently, decided I was hugging it too close as I got to a turn in the road... front left two sensors went dark red, car beeped at me 3 times, and the steering wheel wheel pulled the car to the right, away from the barrier. Was all very smooth, and I was actually very impressed. Autopilot/TACC was NOT enabled at the time; I had full manual control of the vehicle. Is this behavior normal? Is it part of AEB? Or something else?