The construction and development of the transportation network is decisive for the economic development of a given country. Despite successive investments in this range, there are still not enough favourable solutions to the road network and international links in Poland, which is a serious economic barrier. Apart from financial resources necessary for the extension of the transportation network, also legislative changes aimed at improving the process of obtaining lands for this purpose, obtaining investment decisions and determining the legitimate compensa-tion for lands taken over for public roads are necessary. In recent years, we have observed considerable changes in the Polish law which are supposed to bring the partial execution of the above theses. These changes mainly relate to the simplifi-cation of the procedures of obtaining lands, in this way having a significant influ-ence on the shortening of the investment process. In this thesis, attention is paid to the necessity to elaborate the procedures of determining the value of compensation which, apart from the market value of the property, should include additional costs to be incurred by the owner to acquire a new property. Furthermore, the lost benefits from the properties used for the purpose of business activity, which are not ...