An autonomous car,also known as a robotic car, or informally as driverless or self-driving, is an autonomous vehicle capable of fulfilling the human transportation capabilities of a traditional car. As an autonomous vehicle, it is capable of sensing its environment and navigating without human input. Robotic cars exist mainly as prototypes and demonstration systems, but are likely to become more widespread in the near future.
Autonomous vehicles sense their surroundings with such techniques as radar, lidar, GPS, and computer vision. Advanced control systems interpret sensory information to identify appropriate navigation paths, as well as obstacles and relevant signage. Some autonomous vehicles update their maps based on sensory input, allowing the vehicles to keep track of their position even when conditions change or when they enter uncharted environments.
The earliest quasi-autonomous demonstration systems date back to the 1930s. Since the 1980s, when Mercedes-Benz and Bundeswehr University Munich built the world’s first modern driverless car, significant advances have been made in both technology and legislation relevant to autonomous cars. Numerous major companies and research organizations have developed working prototype autonomous vehicles, including Mercedes-Benz, Google, Continental Automotive Systems, Bosch, Nissan, Toyota, Audi, and Oxford University. As of 2013, three U.S. states have passed laws permitting autonomous cars: Nevada, Florida and California
Google Autonomous Vehicle