If you are a driver for you have come to the right place! Uber maintains a certain amount of liability insurance only while you are “online”. It is important to remember that should an accident or similar event occur while you are not driving for Uber, or “offline”, that 3rd party insurance will not cover you. It is your responsibility, and a requirement to drive for Uber, that you maintain auto insurance on you and the vehicle you will use to drive.
See Uber’s website for more information on the insurance they carry.