Purchase of low-emission vehicles for Area IV designed to provide public bus transport in the Karlovy Vary Region. Low-emission vehicles will contribute to lowering the emission limits in the region affected by coal mining and processing, thereby reducing the emission burden from the public service to the population, which is currently provided by carriers with their diesel vehicles with different emission limits. The new vehicles involved in the integrated transport of the Karlovy Vary Region will also increase the quality of the public service provided to the population.