Department of Railways and SLT-MOBITEL have been introduced a Web application for train seat reservation to the passengers. Your can book your tickets via online and tickets can be collected before the journey from following location.
https://seatreservation.railway.gov.lk/mtktwebslr/ticketprintinglocations
In this way you can sure about the travel plan and get a travel ticket with out disappointment at the railway counter. Even though train has many unoccupied seats during the journey, but tickets are sold out at the counter.
Please click the link below to the official website of Sri Lanka Railways.
https://seatreservation.railway.gov.lk/mtktwebslr/
Your trusted partner to make the right choice in Sri Lanka.