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目前世界上海拔最高的齿轨铁路是美国的马里图——派克斯峰铁路(MPPR),其位于科罗拉多州湖区派克斯峰附近的最高点海拔高度达4300m。这是一条全长14km、采用ABT复式齿条的标准轨距的铁路,最大坡度达250‰。
The highest cogged railroad in the world at present is the Malipo-Pax Peak Railway (MPPR) in the United States, at an altitude of 4300 meters above sea level at the highest point near the Pax peak in the Lake District of Colorado. This is a 14km long, standard gauge railway with ABT double rack with a maximum grade of 250 ‰.