For months, Google has been testing its self-driving car to properly steer, brake, turn, and change lanes like a proper driver – but in the latest report, it has learned the number one rule of road rage: Honking. According to the report, the team taught the car’s artificial intelligence to honk as a way to give other drivers on the road a heads up, such as toward a car driving down the wrong way of a one-way street or backing out of a blind driveway. When it first learned to honk, each time the car decided to sound the horn, it first…

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