Open invitation to tender, deadline 21.01.2014, for improvements on 100 year-old U2 line between Zoologischer Garten and Ernst-Reuter-Platz. Further information, specs and docs from Berliner Verkehrsbetriebe (BVG), attn Herrn Richter, tel +49 3025620-272, fax -286, e-mail einkauf.3@bvg.de to whom tenders or requests to participate must be sent. Time limit for accessing documents 20.12.2013. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid= 408778-2013. NUTS-Code DE300. 48/13.