The first class Ge 4/4 I locomotives were delivered as early as 1947 – they were the first modern RhB electric locomotives with trucks and single-axle drive. Their prototype was the BLS class Ae 4/4, which had been delivered 3 years earlier. These RhB locomotives turned out to be marvelous. A sign of this is the fact that even today – after 74 years – a pair of these 1,600 horsepower and 80 km/h / 50 mph units are still in daily use. At the end of the Eighties, these locomotives were modernized. They were given new cabs and later single-arm pantographs, which along with the red paint scheme greatly changed their appearance. Unfortunately, none of these locomotives has been preserved in their original condition.