(CNN) — Here’s a look at Washington, DC’s subway system, generally called the “Metro.” The Washington Metropolitan Area Transit Authority operates Metrorail, the third largest heavy rail system in the ...

The Washington DC metro system may not have the storied history of some of the country’s other subterranean trains. Still, any newcomer to the city will be pleased with its efficiency and convenience.

WASHINGTON — Fourth of July is what WMATA calls its Super Bowl, with massive crowds expected to be riding the rails to get to celebrations in the District. In order to keep everyone safe, WMATA is ...