Outlet plugs, doorknob covers, toilet locks and other safety devices for crawling babies or young toddlers (allianztravelinsurance.com)
You're more likely to need the protection of a good head restraint in a collision than you are to need other safety devices because rear - end crashes are so common.» (iihs.org)
This also works as the park assist, attention assist, lane departure warning and a host of other safety devices rolled into one. (rediff.com)