The Subway/Elevated Train in Philadelphia (MarketFrankford Line). the blue line is mostly elevated . One of 2 subway lines serving Philadelphia (population 1.5 million) USA.
Please subscribe to my new channel dedicated to biking - its a great outlook on the world https://www.youtube.com/channel/UCiol_TJeQn9pPWwik05oGsw
Tags: The Subway/Elevated Train in Philadelphia (MarketFrankford Line), 2017, SEPTA, south eastern, pennsylvania, transit, authority, philly, philadelphia, subway, underground, u-bahn, blue, tube, eleveated, el, L train, new york