Automatic Crash Braking Systems Aren’t All the Same, Says AAA

Volvo "City Safety" Automatic Emergency Braking System

Volvo “City Safety” Automatic Emergency Braking System | Volvo

As automakers race to make automatic emergency braking standard in more new cars, the nation’s largest automobile owners club says not all systems are designed the same.

In controlled testing, AAA announced this week that different automatic emergency braking systems in cars could help prevent crashes—but with varying rates of effectiveness.

“When shopping for a new vehicle, AAA recommends considering one equipped with an automatic emergency braking system,” John Nielsen, AAA’s managing director of Automotive Engineering and Repair, said in a statement. “However, with the proliferation of vehicle technology, it’s more important than ever for drivers to fully understand their vehicle’s capabilities and limitations before driving off the dealer lot.”

Automatic Braking Study

Automatic Braking Study | AAA

Most importantly, AAA noted that two different types of automatic emergency braking systems were available in cars today: systems designed to avoid crashes, and systems designed to lessen severity of crashes.

Systems designed to avoid crashes reduced vehicle speeds by twice that of systems designed to reduce severity of impact, AAA concluded. In crashes with closing speeds lower than 30 mph, systems designed to avoid crashes were successful 60 percent of the time. Interestingly, systems only designed to reduce impact completely avoided crashes one-third of the time.

Volvo "City Safety" Automatic Emergency Braking System

Volvo “City Safety” Automatic Emergency Braking System | Volvo

The results underscore a new, but growing, perception that automatic emergency braking systems don’t require human interaction.

Two-thirds of Americans familiar with the technology believe it’s a substitute for an attentive driver.

“The reality is that today’s systems vary greatly in performance, and many are not designed to stop a moving car,” Nielsen said in a statement.

Volvo "City Safety" Automatic Emergency Braking System

Volvo “City Safety” Automatic Emergency Braking System | Volvo

This year, Audi, BMW, Fiat Chrysler Automobiles, General Motors, Ford, Honda, Hyundai, Jaguar Land Rover, Mercedes-Benz, Mazda, Mitsubishi, Kia, Maserati, Nissan, Porsche, Subaru, Tesla, Toyota, Volkswagen, and Volvo announced that they would make automatic emergency braking standard on their new cars by 2022.

According to AAA, 1,966 deaths were caused by rear-end collisions in 2014.

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