发展经过第二次世界大战以后,瑞士联邦铁路(SBB)还一直使用着大量蒸汽机车。1956到1965年间,根据“机车车辆更新的10年计划”,对这些机车进行了淘汰和更换。随着车站及调车场的完全电气化,使用电力机车来进行这一替换无论在何处都是经济的。然而,对于尚未电气化处的调车作业,无规律的列车救援及供 Development After World War II, the Swiss Federal Railroad (SBB) has also been using a large number of steam locomotives. Between 1956 and 1965, these locomotives were eliminated and replaced under the “10-year rolling stock renewal plan”. With the complete electrification of stations and shunting yards, the use of electric locomotives to make this replacement economical everywhere. However, for shunting operations that are not yet electrified, irregular train rescue and supply are required