Working-level officials from South and North Korea are meeting at the North's border city of Gaesong to work out details for the planned test runs of two cross-border railways.

On their second day of talks on Saturday, the two sides are coordinating technical details for the railway tests, including running schedules, an opening ceremony, safety checks, and the South providing the North with the necessary equipment and materials for the test operations.

At their economic talks held in Pyongyang earlier this month, South and North Korea agreed to hold trial runs on May 17th for two inter-Korean railways - the Gyeongui Line on the western side of the Korean Peninsula and the Donghae Line on the east coast.

Meanwhile, Unification Minister Lee Jae-joung said he expects inter-Korean military talks to take place early next month to discuss measures to ensure the safety of railway test runs.

The two train lines, which pass through the heavily fortified demilitarized zone bisecting the Korean Peninsula, have remain severed since 1950 when the Korean War broke out.