International conference on the railway infrastructure for 21st century OLTIS Group at fair TRAKO 2011 Unique testing of RFID tags Inauguration of RENAULT TRUCKS service in Białymstok Truck & Business Day 2011 OLTIS THREE BALLS Cup 2011 19th International Symposium EURO-ŽEL 2011 Siding of III. Millenium – Modern technology in the management of railway sidings OLTIS Group at the Trade Fair transport & logistic 2011