2020 Mazda Mazda3 SERVICE BRAKES,FORWARD COLLISION AVOIDANCE

My car's automatic emergency brake is deploying without warning, during driving, when there are no other cars in my forward proximity. I took it to the dealership to have it fixed, and on the drive home, it did it again. There is a recall for similar makes and models for this year, but my car has not been included.

I WAS DRIVING MY VEHICLE STRAIGHT AHEAD ON A TWO-WAY CITY STREET WITH NO OTHER VEHICLES IN FRONT OR ON MY SIDES. I WAS TRAVELING AT A SPEED OF 40 MPH. THE TWO-WAY STREET IS SEPARATED BY A CONCRETE DIVIDER AND TROLLY TRACKS. A "BRAKE!" ALERT APPEARED ON THE DISPLAY SCREEN FOLLOWED BY BEEPS. SUDDENLY THE BRAKES WERE ENGAGED BRINGING THE VEHICLE TO A COMPLETE STOP CAUSING THE VEHICLE BEHIND TO COME TO A SCREECHING HALT. IN A FEW SECONDS I WAS ABLE TO DRIVE OFF.