The Saudi Railways Organization has invited bids for work on the second section of the planned $1.4bn Mecca and Medina rail line.
The organisation has asked six pre-qualified international consortiums to prepare their bids for the work that includes operations, signalling and maintenance of the section.
The section is part of the $7bn 300kmph high-speed railway project to connect Mecca with Medina via Jeddah and King Abdullah Economic City.
The SAR6.9bn (approximately $1.8bn) contract for the first section was awarded in March 2009.
The third section of the project is planned to be put to tender before the end of 2009.