Visualizing MBTA DataAn interactive exploration of Boston's subway system Mike Barry and Brian Card - June 10, 2014 Boston’s Massachusetts Bay Transit Authority (MBTA) operates the 4th busiest subway system in the U.S. after New York, Washington, and Chicago. If you live in or around the city you have probably ridden on it. The MBTA recently began publishing substantial amount of subway data through its public APIs. T
