At the end of the Eighties, the RhB still needed the class Ge 4/4 I locomotives, which had become 40 years old. Since it was conceivable that they would still remain in use a while longer, these locomotives were modernized. Multiple unit control was installed and other technical changes were carried out, but the most striking were the new cabs with two large windows. Even if some of the locomotives were already scrapped, several of these partially 70+ year old locomotives are still in use.
