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So if the D train is now running along, say, the A line, you wouldn’t see it. What the Weekender doesn’t show, Lloyd points out, is when trains reroute onto other tracks. If that line (let’s go with the D train) isn’t stopping at a station, it’ll flash to alert you. Click on a line, and the rest of the map fades to gray. The MTA Weekender shows where planned service changes occur on the weekends, and it uses Vignelli’s diagrammatic map instead of the current one. D’Adamo’s color-coded concept set a new standard for the city’s map design-informing even Massimo Vignelli’s now-iconic map from 1972-but the original blueprint had vanished. Suffice it to say, the map was hard to read. In 1940, all three systems were sold to the city and combined, but the three-color design stuck. Those three companies were the Interborough Rapid Transit Company (IRT), the Brooklyn-Manhattan Transit Corporation (BMT), and the Independent Subway System (IND). But these colors corresponded to the three companies that once owned and operated the system's various routes, not the system's organization as a whole.
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It wasn't that New York City's subway map hadn't used colors previously-in fact, it had used three. What made D'Adamo’s map so noteworthy was that it used color to clearly distinguish between different train lines.
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But the map was retired to a filing cabinet and eventually thrown away, never to be seen again. Raleigh D'Adamo drew it, and with it, won a redesign competition held by the Transit Authority. The modern New York City subway map-the one that you see in subway stations and train cars-was born in 1964.
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