The new inner-city transport network of the capital was considered a state-owned prestige object of Cisleithania, which is why the state guaranteed all necessary funds and thus made a speedy realization possible. In addition, cheap workers from all over the monarchy were available; At times, up to 100,000 people were at the same time in use. Among them were mainly Czechs, Slovaks, Italians, Slovenians, Lower Austrians and Styrians, to a lesser extent workers from other parts of Austria-Hungary and even from abroad, including from France and Greece.