Abstract
The article describes trackside part of the ERTMS / ETCS system installed on Railway Research Institute Test Track Centre in Żmigród where functional tests of ?trackside Control-Command and Signalling" interoperability constituent prototypes i.e. eurobalises were conducted based on the elaborated test schedule and the conditions contained in the specifications of Susbset 040 and Subset 036. Moreover structure of an exemplary telegram sent from the eurobalise to the traction vehicle through the air gap i.e. interface A1 was shown. Selected requirements for timing and distance parameters that eurobalises have to meet during designing the trackside part of the ERTMS / ETCS system were also presented. In addition, the methodology adopted during tests was characterized and the list of functional tests carried out at the selected test site was specified. The paper summary describes the conclusions of the tests and the main features of Railway Research Institute Test Track Centre.