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Waymo Car AI Obeys Traffic Cop Hand Signals

Self-driving cars need to cope with every situation a human driver can, and that includes faulty lights at a junction being replaced with a traffic cop giving hand signals to follow.

 & Matthew Humphries Former Senior Editor

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Ask any self-respecting person working in the field of artificial intelligence and they'll tell you self-driving cars still have a long way to go. That doesn't mean progress isn't being made, though, with the latest breakthrough from self-driving tech company Waymo being the ability to deal with traffic cops.

If the lights fail at a junction a traffic cop can be called in to ensure traffic keeps flowing while they are fixed. Such a situation would surely confuse a self-driving car system because it only understands lights at a junction. As CNET reports, Waymo decided to fix this by teaching its driving AI how to recognize and properly react to a traffic cop and the hand gestures they make that act as instructions.

As you can see in the video above, the Waymo self-driving system recognizes the traffic cop, comes to a stop, and them waits for the appropriate signal before driving on. The fact this works at all is impressive, but you also then realize no self-driving car can be allowed to function without a driver behind the wheel if this traffic cop recognition is missing. At some junctions around the world the traffic cop can be a permanent feature!

One other impressive feat Waymo's AI has achieved is the distance between disengagements. Whenever the self-driving system on a car requires a human driver to take control it is called a disengagement. Waymo's system is so mature and experienced now, it can travel 11,000 miles before a disengagement happens, and that distance is surely only set to grow.

About Our Expert

Matthew Humphries

Matthew Humphries

Former Senior Editor

My Experience

I started working at PCMag in November 2016, covering all areas of technology and video game news. Before that I spent nearly 15 years working at Geek.com as a writer and editor. I also spent the first six years after leaving university as a professional game designer working with Disney, Games Workshop, 20th Century Fox, and Vivendi.

I hold two degrees: a Bachelor's degree in Computer Science and a Master's degree in Games Development. My first book, Make Your Own Pixel Art, is available from all good book shops.

My Areas of Expertise

  • PC components and system building
  • Raspberry Pi
  • Software development
  • Storage technology
  • Video games and gaming hardware

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