Slamming on the brakes seems like an over-reaction. Nobody is arguing opening the door at speed is safe, but an unexpected brake application isn't safe either.

Slamming on the brakes seems like an over-reaction. Nobody is arguing opening the door at speed is safe, but an unexpected brake application isn't safe either. A more appropriate measure would be a loud and annoying alarm. Or a steering wheel shaker (like many lane-keeping systems already have).