[londons_explore]

Why would you want to know the train more than 10 minutes before departure? Surely you'd just get on the immediate next train?

Are tickets only for a specific time of train?

Or are trains less frequent than every 10 minutes?

[dsr_]

The next train for your destination may be 30 minutes later, or over an hour away. LIRR has about 125 stations in 8 zones. It's not called Long Island because it's small and round.