[6] The first completed units of the train-tram, which left CAF's facilities for the first time on April 24, 2012, were carrying out homologation tests in northern Spain.

[7] In November 2014, the Andalusian government announced the arrival of the first unit in the province of Cádiz in order to carry out dynamic tests in the part of the route that was already completed.

[8] Thus, on November 17, 2014, the tram circulated for the first time between the stations of Ardila and Pinar de los Franceses, completing the route satisfactorily.

[9] On February 11, 2022, for the first time, an 801 unit traveled the entire 24-kilometre route and 21 stops of the Tramway of the Bay, from the Pelagatos depot (Chiclana de la Frontera) to the Cádiz station.

The tram-train line has been described by the European Commission as being 42% quicker than the train, and 26% faster than taking the car, along with projected reductions of 97% in traffic injuries and 75% in road deaths are foreseen.