A model of the dimensioning of the number of service places at parking lot entrances by using the queuing theory

Problematika optimalnog vođenja prometnog toka te osiguranja odgovarajućeg broja parkirnih mjesta prisutan je u većini visokorazvijenih urbanih sredina Europske unije pa i Republike Hrvatske. Formiranje odgovarajućeg rastera prometne mreže, uvjetovane povijesnim i postojećim građevinama i zonama izuzetno je izazovan zadatak. Isto tako, zahtjevno je i osiguranje odgovarajuće dostupnosti do slobodnih parkirnih kapaciteta u vremenima vršnih opterećenja u samim središtima urbanih područja. No, vrlo su česti slučajevi u kojima, čak i u trenutku kada se osiguraju odgovarajući parkirni kapaciteti, dolazi do zastoja na ulaznim i izlaznim terminalima parkirališta i garažnih objekata koja su derivirana nesukladnostima njihovih kapaciteta i prometnih potreba u određenom vremenskom trenutku. Upravo iz tog razloga, u radu se predstavlja potencijalni model određivanja optimalnog broja ulaznih uslužnih mjesta (terminala) primjenom teorije redova čekanja.The issue of the optimal management of the traffic flow and the ensuring of an adequate number of parking spaces is present in the majority of highly developed urban areas of the European Union, including the Republic of Croatia. The formation of an adequate raster of the transport network, conditioned by the historical and existing buildings and areas is an extremely challenging task. Similarly, ensuring an adequate availability of free parking capacities in times of rush hours in the very centres of urban areas is also very demanding. However, what often occurs, even when adequate parking capacities are ensured, is a halt on the input and output terminals of parking lots and garage facilities that are derived by a disproportion of their capacities and traffic needs at a specific time. Precisely for that reason, this paper presents a potential model for determining of an optimal number of input service places (terminals) by using the queuing theory