We signed a Contract with MPK in Lublin for the initial implementation of the cityLineDesigner system and conducting an optimization test of the construction of MPK rolling stock brigades over a 3-month period. The contract is an introduction to two implementations: CLD in the latest version with extensions of the optimization module created as a result of EU projects for ZTM in Lublin and the complete TransERP system for MPK in Lublin. The basis for further negotiations and conclusion of contracts will be the positive result of the test planning of the client’s rolling stock using new optimization algorithms. Currently, intensive work is underway on brigade optimization tests for MPK in Lublin and, in parallel, for MPK in Krakow. At the current stage of activities, timetable databases of both companies have been completed and the correctness of the data is being verified before the actual optimization work.