The European Route E57 is a major road in the European road network, part of the International E-road network. It stretches approximately 1,200 kilometers, connecting several countries in Central and Eastern Europe. The route begins in Germany and travels through Austria, Slovenia, Croatia, and Hungary, ultimately reaching its endpoint in Romania. E57 serves as an important transportation corridor, facilitating trade and travel across these nations. It connects various cities and regions, enhancing economic cooperation and cultural exchange. The route is marked by the distinctive green E-road signs, ensuring easy navigation for drivers.