New York's Metropolitan Transportation Authority and some other organizations already provide transit trip planners, but Google executives note that theirs is integrated with other search features, such as street views and restaurant reviews.
Google, the world's largest search engine, offers transit information in about 70 other cities worldwide, including Chicago and Tokyo. The Mountain View, Calif.-based company worked for two years to add 40,000 subway stations, bus stops and other points on the New York metropolitan area's mass transportation network, executives said.
"It's just a huge volume of routes and data," co-founder Sergey Brin said.
The MTA provided data but no money for the effort, which comes as the agency projects a $900 million deficit next year.
Transit officials are hoping to plug the gap by raising fares and tolls, but also say they may have to cut service. A commission appointed by Gov. David Paterson is expected to make recommendations in December on solving the agency's financial problems.
Paterson praised the Google intiative, saying, "This is a time in New York's history when we're trying to do more with less, and this is a good example of that because it won't cause taxpayers to lose a penny."
More than 8.5 million riders use the MTA's subway, bus and rail lines on an average weekday.
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