Road map of the Czech Republic 1:50,000 (SM 50) is a multicoloured reprint of thematic content into the Base map of the Czech Republic 1:50,000 (ZM 50). The thematic content includes motorways, roads with their classification, numbers of motorways and roads, nodes of the localization system of the road database (LS SDB), interchanges, bridges, underpasses, railway crossings, tunnels, ferries, curves, ascension, passes, kilometrage by 1 km etc. Each map sheet contains a map legend with the selection of the most common map symbols. The map is published in cooperation with the Road and Motorway Directorate of the Czech Republic which also determines an edition plan.