BROOKLYN - A Brooklyn group has launched an experiment offering subway riders on the L train their own underground Wi-Fi network.

The project called the L Train Network uses homemade, handled battery-powered servers. The group that runs the servers decides what information to store on them, including poetry, books and news headlines.

The Intranet runs from the Mogran Street L station to the last stop at 8th Avenue in Manhattan.

The Metropolitan Transportation Authority has not approved the digital experiment.