The Saudi Railways Organization (SRO) is one of two state-owned company that operates Saudi Arabia's rail network.SRO provides freight services on two main lines totalling 1018 km. These connect Riyadh with the port of Dammam on the coast of the Persian Gulf. SRO passenger trains operate between Riyadh and Dammam.There are plans to extend the network to the Red Sea port of Jeddah and, eventually to the borders of Jordan, Yemen, and perhaps all the way to Egypt.