Since the late 1990s and early 2000s, the MTA has experimented with Automatic train operation. New York City Subway trains normally run with a train conductor and a train operator. In 2006, the L train was the first route to be run by computers. The 7 train is becoming the second route to be run by a computer. There are computers both on the train and along the side of the tracks. The computer does the engineer's job by driving and stopping the train.