Designing And Performing Works For The Task Entitled "Improvement Of Safety At Selected Rail And Road Crossings In: I Bydgoszcz, Iz Łódź, I And Ostrów Wielkopolski, Iz Szczecin, Ia Warszawa, Iz Zielona Góra" As Part Of The Project Entitled "Improving Safety At Railroad Crossings - Stage Vii" Implemented As Part Of The National Plan Of Reconstruction And Increase Re Immorement (Kpo)