The Dramlje – Šentjur section is a connecting road in the Republic of Slovenia. There are 3 tunnels on the mentioned section, Kozarica, Kameno and Brezovje. CTP PROJEKT is with the Slovenian company GPI d.o.o. contracted the development of main and detailed ventilation design for all three tunnels, and for the Kameno tunnel additionally the Ventilation Study, Fire Risk Study and Risk Analysis.