> This is the one that sounds truly wrong - if your car alerts you of adjacent vehicles when it shouldn't, (a) you can probably turn off that assist and (b) you should tell the company because it literally sounds like a bug.
This is the one which I empathized with, because it happens to me all the time (2022 Mazda CX-30). The "car next to you" warning doesn't come on randomly or anything, it's that the software can't distinguish between the scenario when I'm driving straight and about to make a lane change, or when I'm turning at an intersection and there's a car in the turn lane next to me. It is admittedly annoying that the car beeps at me in the latter scenario, but I have to imagine that it's hard to distinguish between the two.
You've misunderstood what we're talking about. Using the turn signal is what triggers the warning in this case. The car is correctly detecting that there's a car in your blind spot, but it incorrectly interprets the turn signal as "I'm going to change lanes" rather than "I'm making a turn".
This is the one which I empathized with, because it happens to me all the time (2022 Mazda CX-30). The "car next to you" warning doesn't come on randomly or anything, it's that the software can't distinguish between the scenario when I'm driving straight and about to make a lane change, or when I'm turning at an intersection and there's a car in the turn lane next to me. It is admittedly annoying that the car beeps at me in the latter scenario, but I have to imagine that it's hard to distinguish between the two.