MIT's Media Lab seems to have solved a problem we haven't encountered yet. Imagine that in the future you are walking on a busy street. You walked through one or two exquisite shops and decided to cross the road to have a coffee. (I wanted to say that I went to the bookstore, but when this problem occurs, the bookstore may be gone.) You walk down the road and watch to the left. You see a driverless car approaching you. In the future, fashionable people around you Everyone seems to have this kind of self-driving car. I saw that the car gradually slowed down and stopped at the intersection. Do you dare to cross the road in front of this car at this time? Does it know that you are crossing the road? Will it suddenly accelerate and break your leg? There is no driver in the car and you can't communicate with your eyes. CT For Single-phase Electricity Meters
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A research team led by Kent Larsen of the Media Lab proposed a solution. The researchers succeeded in assembling a prototype of an electric car using lights that resemble eyes and sensors on the Kinect controller of the Xbox 360 Kinect (the car is about the size of a desk). When the sensor senses your presence, the lights can turn around and look at you. The blue LED light will flash, indicating that the car has seen you. Directional speakers will also turn to your position, this car is telling you that it is safe to cross the road. This system can also flash bright white LED lights to remind you. The sonar sensor can detect whether the person walking is too close to the side of the car. If it is, the LED light on the wheel will change from green to orange and then to red. The closer you go, the deeper the red. It is telling you in this way that it knows of your existence. 
A few years ago, it seemed far away to make cars autonomous. It requires large-scale infrastructure construction, new laws need to be enacted, and completely change the driver's concept of "how reliable is the robot car". But now, Google is already testing driverless cars, and various car manufacturers are steadily adding a series of functions that allow drivers to choose to drive less. The adaptive cruise control system has taken over the braking and acceleration systems, even in some mid-range models. Next year, BMW will also sell a model that can drive autonomously below 25 mph. Autonomous cars seem to be much more likely. But it may be many years before municipalities are allowed to drive these vehicles on the road. The municipality will at least request that a driver must sit behind the steering wheel to prevent the car from short-circuiting and decide to crush a passerby holding a cup of coffee.