Automated trains are railway systems that operate without a human conductor. They use advanced technology, such as sensors and computer systems, to navigate tracks and manage speed. This automation can improve safety, efficiency, and reliability in public transportation. These trains are often part of urban transit systems, like subways and light rail, where they can run on fixed schedules and respond quickly to changes in passenger demand. Examples of automated train systems include the Docklands Light Railway in London and the Vancouver SkyTrain in Canada.