This article [1] is several years old, but I believe it is still an accurate summary:
> Sam Abuelsamid, an industry analyst at Navigant and former automotive engineer, tells Ars that it's "pretty much universal" that "vehicles are programmed to ignore stationary objects at higher speeds."
Chevrolet says [2]
> At speeds between 5 and 50 mph, Automatic Emergency Braking (AEB) can help you avoid or reduce the severity of a collision† with a detected vehicle you’re following using camera technology. It can automatically provide hard emergency braking or enhance the driver’s hard braking.
They don't specifically say it won't detect stationary objects on this page, but a vehicle you're following will have been in motion, or you're not following it.
Consumer reports describes several types of AEB [3], none of which mention stationary objects.
If you've got a reference that suggests that driver assistance features stop for stationary objects outside of parking speeds, please provide a link.
> Sam Abuelsamid, an industry analyst at Navigant and former automotive engineer, tells Ars that it's "pretty much universal" that "vehicles are programmed to ignore stationary objects at higher speeds."
Chevrolet says [2]
> At speeds between 5 and 50 mph, Automatic Emergency Braking (AEB) can help you avoid or reduce the severity of a collision† with a detected vehicle you’re following using camera technology. It can automatically provide hard emergency braking or enhance the driver’s hard braking.
They don't specifically say it won't detect stationary objects on this page, but a vehicle you're following will have been in motion, or you're not following it.
Consumer reports describes several types of AEB [3], none of which mention stationary objects.
If you've got a reference that suggests that driver assistance features stop for stationary objects outside of parking speeds, please provide a link.
[1] https://arstechnica.com/cars/2018/06/why-emergency-braking-s...
[2] https://www.chevrolet.com/support/vehicle/driving-safety/bra...
[3] https://www.consumerreports.org/cars/car-safety/automatic-em...