Anton Kolak completed his studies in the field of traffic in 1984 and earned his degree as a graduated traffic engineer. At the Faculty of Maritime Affairs and Transport in Rijeka, he obtained a master’s degree in the field of traffic technology in 1992. Since 1985 he has been employed at the Croatian Railways (HŽ). From 1991 to 1994 he worked in a private company Croatia kombi Zagreb as a procurator. In 1994 he founded his company KOLTRANS d.o.o. where he is the sole owner and director. The company deals with the transport of goods in international and domestic transport. He was a longtime president of the Supervisory Board of the Association of Croatian Carriers. He is a member and secretary (in third term) of the Examination Comission within the Croatian Chamber of Traffic Technology and Transport Engineers (HKIP) in the vocational class of road traffic engineers. He fluently speaks English.