The series was introduced as part of the
Rail 2000 project, a massive project to modernise and improve the capacity of Switzerland's railways. Upon their entry into service in the early 1990s, they replaced the
Ae 3/6I,
Ae 4/7, and
Re 4/4I series units, and displaced many of the
Re 4/4II series into lesser duties. When SBB was split up on 1 September 1999, locomotives Re 460 No. 079–118 were assigned to the
freight division, later becoming
SBB Cargo. It was seen as an advantage to use all Re 460, which had been designed for , for passenger service. The passenger division passed the
Re 6/6 to SBB Cargo and bought Re 460 079–095 on 1 January 2003, 096–102 in 2004, and the rest in 2005. While originally designed as a multipurpose locomotive, they are now used for passenger services only, often in conjunction with the
IC 2000 double-decker or trainsets (often used to pull
InterCity and
InterRegio trains in the German and French language areas). Their
freight role has been assumed by
Re 482s,
Re 420/421 and
Re 620 (previously also
Re 481). They are maintained at
Yverdon. == Modernization ==