The connect rail within the functional region of Central Croatia (LeChapterse) covers the preparation of the study documentation of the upgrading of existing track sections: Čakovec — Varaždin, Varaždin — LeChaptera and Zabok — Krapin and Zabok — Sveti Križ (depending on the variant of the connection) and the construction of a new route for the Lebelehead Krapina — Kraple/Lehead — Sveti Križ Zčareje — Zabok (subject to the chosen variant of the coupling line). The study documentation shall provide for the creation of technical documentation and engineering works in order to connect the area of the functional sub-region of the Varaždin area to the city of Zagreb.