Introduction. The driving force behind the economic development of the regions and the countries-members of the European Union is modern transport infrastructure. For this reason, to draw up the level with the countries of Western Europe, there is funding for the countries of the former socialist bloc in the construction and modernization of road routes. The purpose of the article is studying the condition of road infrastructure in the EU and, in particular, Poland as a factor in the economic development of countries and regions. Results. The article analyzes the current development of road infrastructure in Europe and, in particular, Poland and the implementing investments for this purpose. The Regulations of the General Director for National Roads and Motorways as well as legal acts concerning this issue were analyzed. The prospects for the development of Polish road engineering till 2030 were indicated. The types of roundabouts on motorways built in the EU countries are presented. Scientific articles on the situation of EU countries in the field of road infrastructure have proven to be important sources of information. However, the most important source when it comes to road infrastructure in Poland turned out to be materials of General Directorate for National Roads and Highways, in which all national road programs are described. Conclusions. The authors justify that each year Poland is getting closer to the Western countries of EU on the level of road infrastructure development. The main reason for the increase in the level of road infrastructure in Poland is the projects of the General Directorate for National Roads and Highways, as well as the National Road Construction Program for the years 2014-2023 (with a perspective till 2030) and the National Road Traffic Management System for TEN-T networks, which will have a significant impact on economic growth and the comfort of movement of the society. Keywords: road infrastructure, economic development, Trans-European Transport Network, sustainable transport development strategy.

The transport of oversized cargo is becoming more and more popular, which is related to the construction of, inter alia, wind farms to generate electricity in mountain areas or on the coast of the Baltic Sea. Internet communication networks are expanding, thus requiring the construction of new relay towers. Non-divisible elements to be transported are getting longer and more difficult to be delivered and installed in the field. All this must be met by forwarding and transport of industrial long cargo. Such a situation requires specialized vehicles, monitoring and optimization of travel routes.