The world is full of feel-bad news. Here’s something to feel good about: Automatic emergency braking is one of the great car safety-tech success stories.
Auto-braking systems, called AEB for short, use sensors including cameras, radar, and lidar to sense when a crash is about to happen and warn drivers—then automatically apply the brakes if drivers don’t respond. It’s a handy thing to have in those vital few moments before your car careens into the back of another. One industry group estimates that US automakers’ move to install AEB on most cars—something they did voluntarily, in cooperation with road safety advocates—will prevent 42,000 crashes and 20,000 injuries by 2025.
A new report from AAA finds these emergency braking systems are getting even better—and challenges automakers to perfect them at even higher speeds.
AAA researchers tested three model year 2018 and 2017 vehicles versus three model year 2024 vehicles, and found the AEB systems in the newer cars were twice as likely as the old systems to avoid collisions at speeds up to 35 miles per hour. In fact, the new systems avoided all of the tested collisions at speeds between 12 and 35 mph. The majority of the newer cars avoided hitting a non-moving target at 45 mph, too.
The systems “are headed the right way,” says Greg Brannon, the director of automotive research at AAA.
Now new regulations will require AEB systems to get even more intelligent. Earlier this year, the US National Highway Traffic Safety Administration, which crafts the country’s road safety rules, announced that by 2029, it will require all cars to be able to stop and avoid contact with any vehicle in front of them at even faster speeds: 62 mph. The Feds will also require automakers to build AEB systems that can detect pedestrians in the daytime and at night. And automakers will have to build tech that applies brakes automatically at speeds up to 45 mph when it senses an imminent collision with a person, and 90 mph when it senses one with a car.
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