[gnicholas]

I've never owned a car with BSM but have rented for extended periods of time. I would expect that after a year or two of using the system while also actively checking my blind spot the conventional way, I would become comfortable with understanding its reliability and limitations (if any) and would adjust my behavior.

Some Hondas pipe through a camera feed from the side of the vehicle when you turn on your blinker, which wouldn't have the same potential weakness for cyclists that you mention with the binary sensor-based systems.