There's been evidence for a while that these safety systems do cause drivers to not pay as much attention: https://www.wired.com/2011/07/active-safety-systems-

There's been evidence for a while that these safety systems do cause drivers to not pay as much attention: https://www.wired.com/2011/07/active-safety-systems-could-create-passive-drivers/ https://www.wired.com/2011/07/active-safety-systems-could-cr... Like this article says, in city traffic that's stop and go, these systems could prevent rear-endings. But it could also make drivers more complaisant and not pay as much attention in situations where these systems don't work as well (higher speeds on freeways or with pedestrian detection).