Dynamics and trends of the development of transport relations in road freight transport

Ovim radom izučava se struktura transportnih relacija u hrvatskom cestovnom teretnom prometnom sustavu. Rad se temelji na podacima Državnog zavoda za statistiku Republike Hrvatske prema statističkim izvješćima pod nazivom „Transport i komunikacije“. Izučavano je vremensko razdoblje od 2002. ÷ 2012. godine. Analizira se apsolutna i relativna struktura transportnih relacija prema utvrđenim kategorijama u hrvatskom cestovnom teretnom prometu. Vrši se grafička analiza apsolutne i relativne strukture transportnih relacija u hrvatskom cestovnom teretnom prometu prema količini cestovnog teretnog supstrata i ostvarenom transportnom radu prema izučavanim kategorijama transportnih relacija. Analizira se struktura transportnih relacija cestovnog teretnog supstrata u hrvatskom prometnom sustavu, uz korištenje metoda matematičke statistike, prije svega matematičkih prognostičkih modela kojima se ocjenjuje statistička signifikantnost trenda izučavane varijable. Istraživanjem su ustanovljeni statistički signifikantni trendovi promjena u strukturi transportnih relacija i njihovoga apsolutnog i relativnog udjela podmirenju teretne transportne potražnje kao i ostvarenom transportnom radu na tim relacijama.This paper investigates the structure of transport relations in the Croatian road freight transport system. The paper is based on data from the Croatian Central Bureau of Statistics, according to statistical reports entitled "Transport and communications". The observed period is 2002 ÷ 2012. It analyzes the absolute and relative structure of transport relations according to the established categories in the Croatian road freight transport. It includes the graphical analysis of absolute and relative structure of transport relations in the Croatian road freight transport, according to the amount of road freight substrate and realised transport performance through the studied categories of transport relations. It analyzes the structure of transport relations of road freight substrate in the Croatian transport system, with the use of mathematical statistics, above all mathematical forecasting models to evaluate statistical significance regarding the trend of the studied variable. The survey established statistically significant trends of changes in the structure of transport relations and their absolute and relative share in meeting freight transport demand as well as the realised transport performance on these relations