Reaching the highest levels of safety for self-driving cars will depend on how well the cars are engineered to know when communications are needed, and to be able to communicate with other cars, with bikes, with people on foot. Where to go? When to walk?

Uber Technologies has filed a patent toward that end, with a discussion on how self-driving cars might communicate with pedestrians.

The patent title is “Light output system for a self-driving vehicle.” The patent applicant is Uber Technologies.

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