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New self-driving test van talks to pedestrians using light signals

14 Sep 2017
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New self-driving test van talks to pedestrians using light signals

Ford Motor Co. has designed a light signal system for autonomous cars that company officials say helps solve the problem of self-driving cars safely interacting with pedestrians, bicyclists and human drivers. Ford engineers said they hope tests results from real-world encounters will pave the way for standardization and industry-wide adoption.

 

 

The white light display, located at the top of the windshield, is designed to communicate intent to yield way or accelerate from a stop, which today is done through hand gestures, head nods and eye contact. The display’s color and location were chosen to comply with federal motor vehicle safety standards and not create confusion with other light signals on the vehicle. The cue for yielding to a full stop is two white lights that move side to side. A rapidly blinking white light indicates the vehicle is beginning to accelerate from a stop and a solid white light means the vehicle is driving under computer control.

 

 

Ford researchers ruled out displaying text messages or symbols because of potential language or recognition challenges. Light signals for turning and braking are already standardized and universally accepted. Ford partnered with the Virginia Tech Transportation Institute in August to test how people reacted to a self-driving vehicle signaling its intent. Ford disguised drivers by outfitting them with a costume that looks like a seat and headrest to make it appear to outsiders that the vehicle was being driven autonomously.

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