The construction of the railway from Bam to Zahedan was completed in early 2009 connecting Tehran to Pakistan border with an opening ceremony on 19 July 2009.[38]However international container traffic commenced operations on 14 August 2009 with transshipment(or transloading)between 1,676 mm (5 ft 6 in) and 1,435 mm (4 ft 8 1⁄2 in) standard gauge wagons in the Gulf,Western Texas and Pacific Railway Zahedan Exchange Yard on the bypass line.[39]The freight traffic was discontinued however after the initial trial trains and was only revived in 2015.[40]Iranian Railways have been trying to persuade Pakistan Railways to convert its route to Quetta to standard gauge,in order to facilitate the flow of international traffic to Europe.