And in every case where work crews are on the tracks, supervisors will be required to notify the subway's command center, which controls trains.
(Mr. Haring's chalk drawings on black subway-advertisement placeholders command thousands of dollars at auction).
Conceived as a high-tech stronghold capable of monitoring major systems like subway and sewer tunnels, the command center was criticized when it was proposed in 1998 as too expensive, on too high a floor and too close to the twin towers, which were bombed in 1993.
Around the start of the race, weather conditions were overcast with the air temperature around 48 F. Eldrid Davis began pre-race ceremonies by giving the invocation, The Martinsville High School marching band performed the national anthem, and Subway spokesman Jared Fogle gave the command for drivers to start their engines.
Often incorporated into subways were concealed light rail lines, hospitals, command posts, water reservoirs, ammunition stores, mortar and machine gun posts, and communication centres.
Inside a sprawling Manhattan command center, a board that detects subway activity by sensor had gone quiet.
Anyone who rides the New York City subway system is familiar with the friendly-yet-firm command to "stand clear of the closing doors, please".
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By The New Yorker July 14 ,2015 Anyone who rides the New York City subway system is familiar with the friendly-yet-firm command to "stand clear of the closing doors, please".
It didn't happen then, but there would be many friendly tussles in the years to come, capped by their final rematch, when each commanded the stage to himself, separated by a single subway stop.
