A new cell phone program will help commuters using the PATH train figure out when their next train is coming. ChoRong Hwang, a student at New York University’s Interactive Telecommunications Program, has developed an application called Mobile PATH that users can download to their cell phone. She says it can tell them how long until their next train arrives by within 40 seconds. The program places a timetable in your phone, which syncs up to its clock. While this means that somebody in a subway station could use the program because it doesn’t require a signal, it also means that if there is some kind of delay, it would not show on the phone. Currently, the program only works for the Journal Square/33rd St. line, and cell phones must be “Java Powered.”