HistoryIn 1979, the first commercial service commenced between Madrid and Albacete, soon expanding to the Madrid-Jaén route. However, it was withdrawn again at the end of 1982 due to the tilting system suffering from continuous breakdowns that limited its speed. Two years later, it returned to CAF for refurbishment. The converters were upgraded, and the exterior decoration was updated. One of the outdated logos on the ends was replaced, and a brown anti-corrosive paint strip was added along the entire roof. This strip was applied differently on each of the end cars as an experiment. Additionally, the pantographs were repainted red.ModelThis latest livery is represented by Electrotren in the new version with reference HE2015/HE2015S, incorporating all these differences and peculiarities compared to previously manufactured references. Throughout its history, the Electrotren Tilting Train traveled extensively across the electrified Spanish railway network, reaching diverse destinations such as Cádiz, Seville, Valencia, Barcelona, Gijón, and Vigo, among others. It also operated some tourist trains like the "Murallas de Ávila" and the "Doncel de Sigüenza", before being retired from service in September 1987. Additionally, it was used in numerous trials for the initial high-speed studies, such as catenary interaction tests, where it reached a speed of 206 km/h, setting a record for electric traction at that time.