NHTSA Complaint #11466101 — 2023 MAZDA CX-50

At 10:16 am, I was driving home on Hall Rd. in Michigan. Hall Road is currently under construction and only two lanes are open and the speed is 40mph. It was raining pretty hard and also very windy. I was traveling West in the left lane and i noticed people in front of me began slowing down to about 10mph and going around an object I couldnt see. By the time it was my turn to pass said object, I realized it was a speed limit sign that had been knocked over by the wind. I went around it and pulled off to the side of the road where there was a small patch of flat, clear land (I believe there is a fire extinguisher or some kind of service system there). Try to act fast, I opened my door, removed my seatbelt and after looking for cars behind me, I ran across the road and picked up the large sign and moved it out of the way. By the time I had moved the sign, I noticed cars slowly approaching but were not willing to pass me. Then I heard them honking their horns but because it was raining hard, I couldnt see who or hear what they were saying. I figured Id look back at my car in case that was the reason and sure enough, it was and I jumped out of the way, and watched my car slowly fall off the ledge of the open roads and into the construction area of the new roads (there was a 2-3 foot deep and maybe 1-2 feet wide trench between the open road and the newly paved roads). My car then stopped abruptly, hanging over the ledge. Seeing the car had stopped completely, I opened the door and slowly got the car off the ledge. This did minor damage to the underside of my front and rear bumper but nothing serious. The problem I feel that is evident is that the car never engaged the electronic parking brake. This was a similar issue to what led to the death of [XXX] (granted, his shifting mechanism was an Audi style shifter and was shift-by-wire). I am not sure exactly what kind of automatic transmission is in my Mazda other than a 6spd. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B