Lifesavers: Backing up your backup system

Back-up aids such as cameras and warning sensors can provide an extra measure of safety, though some drivers with these systems are relying on them to the exclusion of looking through the vehicle window, rather than as a supplement to traditional visibility.

That's just one little tidbit we learned at the recent Lifesavers Conference, an annual gathering of safety professionals from both public and private sectors who share a goal of making highways safer.   

The news about backup systems comes from a study of advanced vehicle technology use conducted by the National Highway Traffic Safety Administration. NHTSA found that some 17 percent of drivers whose vehicles had back-up cameras rely on the devices when reversing, and don't turn to see what's behind them or use their mirrors. Worse, 14 percent of those who had sensing systems – which warn drivers of obstacles behind them with a series of audible beeps and sometimes lights that grow increasingly urgent as the object or person grows closer – don't bother to look, either. And 40 percent of drivers with backup systems and 27 percent of those with cameras said they would back more slowly if their vehicles were not so equipped.

Consumer Reports testing has shown that while back-up systems can alert drivers to hazards behind their vehicles, some function better than others, and none are infallible. Rain or snow can compromise their effectiveness, or even render them useless. Sensors that use audible warnings and do not have cameras may not detect slender items. (Video: how we test blind zones.)

The bottom line is these devices can add a measure of safety, but should be regarded as an aid and not a replacement for your own senses. Turn around, look, and listen before backing, and use your mirrors. And above all, take a breath and slow down; we're often in such a rush that we don't take the time to look around. If you're backing near children or unsure what's behind you, get out and have a look to make sure the coast is clear.

Learn more about car safety and vehicle blind spots.

—Jim Travers