In operation since 1939 (with subsequent termini modifications), route 11 runs along the principal seafront avenue from Rimini's railway station to Riccione Terme.

[3][6] In July 1921, with a loan of 1.2 million lire from the local Cassa di Risparmio, the route was electrified and extended southwards along the principal seafront avenue to the site of the present-day Piazza Marvelli.

[3][5][7][8] Further southern extensions followed to Miramare in 1925, and to Viale Ceccarini in Riccione's city centre on 26 June 1927,[3][5][7][9] only now made possible by newly built carriageable bridges over the Torrente Marano and Rio Melo.

[14] The overhead wiring was removed during the Second World War,[4][15] during which time bombing damaged the roads and directly hit two trolleybuses.

[14][16] Services were initially amended to allow trolleybuses to run on unaffected sections,[14] but the line was finally closed on 26 June 1944.

[17] Thus, numbered as route 11, the system passed into the control of Rimini's municipal council on 1 October 1959, which formed ATAM (Azienda Trasporti Autofiloviari Municipali) to manage the line in July 1960.

The service was withdrawn in 1996,[18] but the reversing loop in the overhead wires that allowed trolleybuses to terminate there was retained, and rare shortworkings to Miramare were designated "11/" (11-barrata).

[12] The following year, the prohibition of motorbuses in Piazza Tre Martiri left only the route 11 trolleybus serving Rimini's central square.

[4][5][11][12] In 2001, its name was modified again to TRAM Servizi,[4][12] and ownership of the infrastructure passed to Patrimonio Mobilità Provincia di Rimini (PMR).

[18] In October 1999, the route was temporarily shortened from Piazza Curiel to Piazzale Giardini, but the terminal loop at the latter point was configured differently than it had been previously.

[18] Construction of a 1.5 km-long (0.93 mi) southern extension from Piazza Curiel to Riccione's Terme, specifically Piazzale Marinai d'Italia, began in spring 2000.

[31] Because the overhead wire was not extended to Piazzale Gramsci, the articulated vehicles had to cover that short section using their auxiliary diesel engines.

[32] On 1 January 2012, TRAM was absorbed by Start Romagna SpA, a then-new regional entity which would manage public transport within three provinces.

[34] The project was first proposed in 1994 by city planner Leonardo Benevolo,[35] but construction was continually postponed amid local opposition and a delay to the disbursement of central government financing.

[citation needed] The route runs along Viale Principe Amedeo to reach the coastline, serving Parco Federico Fellini.

The route then runs southwards along the principal seafront avenue,[b] serving Rimini's frazioni of Bellariva, Rivazzurra, and Miramare.

[1] In the past, all substations serving route 11 (excluding the new Riccione Abissinia) were equipped with mercury-vapor rectifiers, which were housed in buildings with a central chimney to assist with cooling.

Intermediate stops serve the Fiabilandia amusement park in Rivazzurra, Miramare's railway station, and Federico Fellini International Airport.

[48] Just beyond the Riccione terminus, Metromare vehicles briefly leave the busway to turn around via a small roundabout in front of the railway station; this is the only place where the route's trolleybuses run along public streets during the service day, but they do not carry passengers during this manoeuvre.

[68] (metres) Unit 1017 (built 1978) of the Mauri Volvo B59 has been preserved and restored by Enrico Fabbri, a transport engineer and former director of ATAM Rimini.

[80] On 20 August 2021, a 43-year-old man was arrested for sexual assault after stripping naked in front of a female passenger on a route 11 trolleybus on Viale Regina Elena.

[81] On 10 September 2021, a 26-year-old Somali citizen stabbed two female ticket inspectors with a kitchen knife during an inspection on the route 11 outside Rimini Terme.

[83][85][86] The attack prompted reaction from national politicians, including the Interior Minister Luciana Lamorgese and opposition party leader Matteo Salvini.

[83][87][88] In December 2022, the Court of Rimini acquitted the attacker on grounds of his schizophrenia and ordered him to stay at a secure mental health facility (REMS [it]) for six years.