目前欧洲有10个国家有齿轨铁路。其轨距最窄为750mm,最宽为1435mm,一般为800～～1000mm。坡度最小为75‰,最大为255‰。最早一条营业线于1871年开通,最迟一条于1974年建成通车。由于目前齿轨铁路多为旅游观光铁路,其特点为普通铁路所不能代替,故其经济效益一般都比较好。 There are currently 10 countries in Europe with cogs. The narrowest gauge for the 750mm, the widest of 1435mm, usually 800 ~ ~ 1000mm. The minimum gradient is 75 ‰ and the maximum is 255 ‰. The earliest a business line opened in 1871, the latest one was opened to traffic in 1974. Due to the fact that most of the cogged railways are tourist and sightseeing railways, their characteristics are that ordinary railroads can not be replaced, so their economic benefits are generally better.