Clever Commute taps into the collective experience of commuters in an effort to make their commute easier. The free service connects people that ride the same train or bus line so they can send alerts to other riders about potential delays in real time. The result is more immediate and actionable information than is provided by transit operators.
Clever Commute currently covers commuter train, bus and ferry lines around New York as well as the El in Chicago. Unfortunately, the New York City Subway is not covered. Maybe they are waiting for wireless service to be installed in underground stations.
I bet that is very useful. I know I would never want to deal with traffic going into the city.