Sadašnji tunel Učka pušten je u promet 1981. godine i sagrađen u obliku jedne tunelske cijevi s dvosmjernim prometom. Prema današnjim potrebama i standardima logično je da se izbuši još jedna tunelska cijev paralelna s postojećom kako bi promet tekao jednosmjerno. U radu su prikazani tipovi tunelske ventilacije s naglaskom na uzdužnu, te je za novu tunelsku cijev izračunat potreban protok svježeg zraka kao i ukupni protutlak koji mehanička ventilacija mora savladati. Zbog sigurnosnih razloga proračun je prilagođen eventualnom požarnom incidentu.

Today's tunnel Uĉka was opened for traffic in 1981 and it was built in the shape of a tube tunnel with two-way traffic. According to today's needs and standards, it is logical to drill another tunnel tube parallel to the existing one, so that the traffic could flow in one way. The paper presents the types of tunnel ventilation with an emphasis on the longitudinal one. The required flow of fresh air for the new tube was calculated as well as the total back pressure that mechanical ventilation must overcome. For safety reasons the calculation is adjusted to the possible fire incident.