Electronic next train signage has come to the New York Subway. Three experimental systems are currently being tested throughout the system, but locals say the kinks are still clearly being worked out.
It turns out the tracking and timing of subway trains is harder than one might think.
Michael M. Grynbaum writes, "The city's subway tracks are equipped with signals that follow trains through the system. That is why trains do not run into one another, or sometimes speed up or slow down to conform to schedules.
But it is hard to harness the information from those signals, and harder still to convert it into an approximate arrival time that can be displayed for passengers. Signals are not routed to a central processing center, so controllers cannot see an entire route at once, and GPS and wireless signals do not travel well underground."
FULL STORY: Experimental Clocks Tell Straphangers if the Wait May Soon Be Over

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

Chicago’s Ghost Rails
Just beneath the surface of the modern city lie the remnants of its expansive early 20th-century streetcar system.

Amtrak Cutting Jobs, Funding to High-Speed Rail
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Ohio Forces Data Centers to Prepay for Power
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MARTA CEO Steps Down Amid Citizenship Concerns
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Silicon Valley ‘Bike Superhighway’ Awarded $14M State Grant
A Caltrans grant brings the 10-mile Central Bikeway project connecting Santa Clara and East San Jose closer to fruition.
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