Periodic indicative notice without call for competition for technical dialogue feasibility stage for mechanization maintenance and renewals vehicles. The vehicles will be used in the deep tube tunnel environment and will need to be able to operate in the confined space of a single bore tunnel. Contact Ben Edwards, London Underground Ltd in London, tel +44 2070383019, e-mail trackprocurement@tfl.gov.uk. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=427573 -2013. 51/13.