WASHINGTON, D.C. - APRIL 10, 2015: Trains and passengers in a Metro Station. Opened in 1976, the Washington Metro is now the second-busiest rapid transit system in the U.S.

Name: Washington Dc April 10 2015 Trains
Uploaded: 2015-06-06T00:00:00.000Z
Duration: 10 s
Channel: Sean Pavone
Description: WASHINGTON, D.C. - APRIL 10, 2015: Trains and passengers in a Metro Station. Opened in 1976, the Washington Metro is now the second-busiest rapid transit system in the U.S. Stock Footage Video (100% Royalty-free) 10264538 | Shutterstock