This is good news for pretty much everyone. I've lived in DC and been to other cities that have these clocks and they're incredibly useful and make the subways a more connected and livable part of the city.

Electronic arrival-time clocks, a convenience long enjoyed by users of mass transit in London, Paris and Washington, are starting to trickle into New York City's labyrinthine transportation network, part of a recent push to bring 21st-century technology to a system that runs very much as it did on its first day more than a century ago.

Officials at the Metropolitan Transportation Authority say the clocks will revolutionize the way New Yorkers get around, soothing the usual anxieties that come with waiting for a bus or train that might never arrive.

Three experiments are now active in the city, including a multimillion-dollar subway tracking system in the South Bronx and GPS-based bus timers along 34th Street that cost the city nothing because a potential vendor picked up the tab.