Autopilot

Tesla cars operating semi-autonomously have had many more collisions than previously reported, and the rate of such incidents has risen, government data shows.

Tesla, whose autonomous-vehicle technology has been implicated in a number of collisions, promoted it in a way that apparently was intended to deceive. Tesla deliberately misled the public about its vehicles’ ability to drive themselves, according to Bloomberg and other news outlets.

Tesla unveiled its own AI chip and — surprise! — plans for a humanoid robot.What’s new: At Tesla’s AI Day promotional event, the company offered a first look at an upcoming self-driving computer powered by custom AI chips.

Tesla is abandoning radar in favor of a self-driving system that relies entirely on cameras. The electric car maker announced it will no longer include radar sensors on Model 3 sedans and Model Y compact SUVs sold in North America.

U.S. authorities are investigating Tesla’s self-driving technology. Federal regulators launched a probe of nearly two dozen accidents, some of them fatal, that involved Tesla vehicles equipped for self-driving.

Recognizing stop signs, with their bold color scheme and distinctive shape, ought to be easy for computer vision — but it turns out to be a tricky problem. Tesla pulled back the curtain on what it takes to train its self-driving software to perform this task and others.