On November 21, a demonstration and presentation of our IT systems took place at ZDiT in Łódź. We showed our systems Trans Erp and cityLineDesigner. In the Łódź agglomeration, passengers carry over 400 buses and almost 500 trams. In such a large and complex network, it is practically impossible to optimize the use of drivers ‘, and rolling stock working time and to realize passenger needs without a modern and efficient IT system.