Amtrak may not be able to prevent its trains from being delayed, but now it can at least tweet about it.

The national passenger railroad announced it has just launched a pilot program under while it will alert ride using Twitter when trains are delayed on the Northeast Corridor for 60 minutes or more.

In addition to Northeast Regional and Acela Express trains on the corridor, the Twitter service will also cover the Keystone Service between Philadelphia and New York via Harrisburg and Shuttle trains between Springfield, Mass., and New Haven, Conn. Amtrak said it would monitor the service's level of activity, including re-tweets and the number of followers, before deciding whether to continue or expand its use of Twitter.