A month after the delivery of the reference series we received an order for the production of parts of systems for several dozens of stable rail lubricators. The end customer, LINZ LINIEN GmbH, chose the tested HeadLub® TS-1-1/ST friction modifier produced by the Swiss company Igralub AG for the reduction of the wheel/rail contact noise. It is the same lubricant which has been used for two years for reducing unpleasant squeaking of tram wheels in rail curves in Plzeňská Street, Prague.