Service is split between New York Penn Station and Grand Central Madison . During off-peak hours, trains usually alternate between these two terminals, providing hourly direct service to each; passengers can transfer at Jamaica Station for the other terminal.
Frequent track work (such as switch and signal upgrades) often reduces service to every two hours , with some trains terminating early at Deer Park and requiring bus bridges to Ronkonkoma. lirr-schedule-ronkonkoma
Significant winter storms have historically led to total service suspensions or heavily modified "special schedules". Service is split between New York Penn Station
