Most important measures carried out on the locomotives Re 420:

•      Renovation and preservation of value of Re 420 for its operation in securing the next 20 years
•      Adaptation of the multiple control for the Re 420 with the interfaces at the two end faces of the locomotives
•      Revision of the major components and systems
•      Spare electrical wiring for high-power and control
•      Replacement of the speed measuring equipment and registration
•      Retrofitting compressor with water / oil separators and air dryers
•      Equipment with the cab display and control consoles
•      Replacement of front lighting with modern LED lighting
•      Equipment with operator interface for customer information system
•      Repainting
•      Equipped with all the functions for the control of the double-deck coaches, in particular for the brake control, door control, emergency brake inhibition, monitoring and fault indication of technical systems
• New pantographs WBL 85 (From the engines Re 460, who got new Faiveley pantographs)

Present services:
Double-deck peak-hour trains of the rapid transit system of Zürich, consisting of 6 double-deck coaches between 2 Re 420s