1. Road Network Lengthhttps://www.cdb.sk/sk/Vystupy-CDB/Mapy-cestnej-siete-SR/SR.alej
2. National Project: Modernization of Local Territorial Governmenthttps://npmodmus.zmos.sk/download_file_f.php?id=1153719
3. Transport Traffic Indicators by Regionhttps://www.mindop.sk/files/statistika_vud/reg_prev_ukazovatele.htm#k3
4. Reducing car dependence in the heart of Europe: lessons from Germany, Austria, and Switzerland
5. Infrastructure development of international importance for the modern transport system;Poliak;Arch. Motoryz.,2019