Street Signs

Cameras help autonomous vehicles read street signs and the color of traffic lights. | The startup, which has raised $36 million in seed-stage funding so far, built its LiDAR systems from scratch. | But LiDARs, aka light detection and ranging systems, do the important work of sensing and helping cars avoid obstacles, whether that's a fallen tree, drunk driver, or a child running out into the road. | Now, a startup called Luminar Technologies Inc. is unveiling a high-resolution LiDAR sensor that was five years in the making.