Open invitation to tender, deadline 20.05.2011, for refurbishment of climatization equipment in plant room on N01, the Geneva orbital road. These rooms group the tunnel signalling, ventilation and management systems. Completion by 2013. Contact ASTRA, Project Management, Estavayer-le-Lac, tel +41 2666487-11, fax -90, e-mail marchespublics.estavayer@astra.admin.ch. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=104400-2011. 14/11.