Engineers laid the line's calibration rail, a short trial section used to check and align the route's technical parameters, on Aug. 11, nearly eight months after construction began last December.

Once commercial service starts, the line will cut the trip from Phu Quoc International Airport to the resorts and entertainment complexes on the south of the island and to the APEC Convention and Exhibition Center to about 20 minutes, the developer Sun Group said.

The line uses 1,435 mm standard-gauge track, the international standard, with rails 180 mm high and 25 m long in a specialized 60R2 grooved profile.

Of the 17.59 km route, 14.3 km runs at grade, about 2 km runs underground and four overpasses at intersections account for a further 1.3 km.

The rail package is being supplied and installed by a consortium of state-owned Vietnam Railways and China Railway 16th Bureau Group (CRCC16).