What is another word for cog railroad?
Pronunciation: [kˈɒɡ ɹˈe͡ɪlɹə͡ʊd] (IPA) 
Cog railroads are unique railway systems that use a cog or rack to climb steep mountains. In some regions, they are also known as rack railways or mountain railroads. The name cog railroad comes from the cogwheel that meshes with a rack rail on steep slopes. The word cog also implies the interlocking nature of the wheel and rail. In Switzerland, cog railroads are known as "Zahnradbahnen," while in Germany they are called "Zahnradbahn." In France, cog railroads are referred to as "chemin de fer à cremaillere," while in Italy they are called "ferrovia a cremagliera." All these terms are used to describe the unique type of railway, which can only be found in mountainous areas around the world.
