Complex sentence: To replace the discontinued Clocker service, New Jersey Transit added four express trains on October 31,2005 between Trenton and New York City operating on approximately the same schedule as the former Clocker trains.
Split into simpler sentences: To replace the discontinued Clocker service, New Jersey Transit added additional express trains between Trenton and New York City. The new trains would operate on approximately the same schedule as the former Clocker trains.