GridMatrix

GridMatrix is an Austin-and-San-Francisco-linked startup that turns the traffic cameras, radar, and loop detectors cities already own into a live feed of congestion, safety, and emissions data. Founded in 2021 by former Apple and Amazon operations engineers, the company sells cloud software to departments of transportation, port authorities, and campuses that would rather squeeze insight out of existing hardware than buy new sensors. It has raised just under $10 million and now runs on bridges, tunnels, and marine terminals across the country.