The first, pioneering, trolleybus service in La Spezia was active between 1906 and 1909, and ran from the city centre to Fezzano, on the road to Portovenere.

After World War II, trolleybuses returned to town in a more modern form, to replace the tram system that had become obsolete.

In the same year, nine Alfa Romeo 900 AF vehicles, bodied by Piaggio and with Ansaldo electrical equipment, came into circulation in La Spezia.

In 1954, the then operator of the system, FITRAM, ordered two more trolleybuses, nos 227 and 228, with electrical equipment by Maschine Works Oerlikon from the San Giorgio company in Pistoia.

With a length of 11 meters, and a greater availability of seats (over 28), they were the first trolleybuses in La Spezia to have battery powered autonomous auxiliary equipment located in the underbody, but they were never used on regular shifts.

Three years earlier, in 1956, Alfa Romeo 910 AF trolleybuses nos 229 and 230 had enriched the trolley fleet, and their use on line 2 until 1978 testifies to their hard work.

The new vehicles, with their wide technological gap due to air conditioning in summer, space for the inclusion of an independent brand of auxiliary motor, and a capacity of 112 (20 seats, 91 standing and 1 driver), had a greatly positive impact: they are all still in service to this day.

From 12 September 2008 to 31 March 2011, line 1 effectively operated only between Pegazzano and Bragarina, at 12-minute intervals with six cars on the road.