The expanded program will replace the SmartBike D.C. bike network, created in 2008.
"The response to the bike-sharing program has been unprecedented, and we are pleased to be able to join with Arlington in our expansion efforts," Mayor Adrian M. Fenty (D) said in a statement.
The District program has 1,500 members making more than 100 trips a day on 100 bikes, said James R. Sebastian, a city transportation planner. He said the current network is "maxed out" and that the city is "trying to meet that demand with this new system."Read more at the Washington Post.