Oct 4, 2019 - Technology

Automatic brake tech needs more work, AAA says

An illustration of a car passing some lines on the street.

Illustration: Sarah Grillo/Axios

New emergency-braking technology that is supposed to help cars avoid pedestrian crashes is often ineffective, per AAA.

Why it matters: Pedestrian deaths are sharply higher, according to federal statistics, with nearly 6,000 fatalities a year, accounting for 16% of all traffic deaths. The technology has the potential to make the streets safer, but clearly needs more work, AAA said based on new test results.

By the numbers: AAA tested four 2019 mid-sized sedans equipped with pedestrian detection systems (Chevy Malibu, Honda Accord, Tesla Model 3 and Toyota Camry) with adult- and child-size dummies and found...

  • In daylight testing, the cars traveling 20 mph struck adults crossing the road 60% of the time.
  • At night, none of the systems detected or reacted to the adult pedestrian, an alarming result considering 75% of pedestrian fatalities occur after dark.
  • When turning right and into a crosswalk, the cars hit the adult pedestrian every time.
  • When encountering a child darting from between two cars, the test vehicle traveling at 20 mph hit the child 89% of the time.
  • At over 30 mph, the systems failed every test.

The bottom line: Like most assisted-driving technologies, pedestrian detection systems have not been perfected and drivers need to pay attention.

Go deeper