As usual, an integrated plan has been prepared for the end-of-year festivities, so as to encourage the use of public transport in the period 8 December 2021 - 9 January 2022. The service will be intensified in the 10.30 a.m. - 8.30 p.m. time slot on Saturdays, Sundays and holidays from 8 to 24 December 2021 and on 6, 8 and 9 January 2022. The bus, tram and trolleybus lines. These services have been increased in particular for the lines going towards the city centre and on the days considered most affected by shopping trips (Saturdays, Sundays and midweek holidays). The lines affected by the increase will be, on Saturdays: 075, 46, 53, 70, 74, 85, 160, 170, 301, 492, 705, 714 and 990, whereas on public holidays and Sundays: 075, 44, 46, 53, 60, 70, 74, 80, 85, 170, 301, 492, 705, 714, 913 and 990. Electrical lines 100 and 119. The service for the two lines running within the city centre is also extended to public holidays, that is to say from 8 to 19 December, as well as 6 and 9 January. On public holidays, Line 100 will run on its usual route: Via di Porta Pinciana (Villa Borghese) - Piazza Cavour - Via di Porta Pinciana (Villa Borghese) and will run from 9 a.m. to 8 p.m., with an average 13-minute frequency. There is a private car-public transport interchange at the car parks located in Piazza Cavour and Via di Porta Pinciana. Line 119 will follow the usual route on public holidays: Piazza Venezia - Piazza del Popolo - Piazza Venezia and will run from 9.00 a.m. to 8.00 p.m.. Metro lines: On 8, 11, 12, 18 and 19 December 2021, the A and B-B1 metro service will be intensified as follows: Line A: 8 trains added to the normal service. Line B/B1: 2/4 trains added to the normal service. 24, 25 and 31 December. 24 December: Surface and underground lines will run until 9:00 p.m. From 11:30 p.m. onwards the surface lines will run at night. 25 December: Surface and underground lines will run between 8:30 a.m. and 1:00 p.m. and between 4:30 p.m. and 9:00 p.m. 31 December: underground lines will run until 2:30 a.m. and surface lines until 9:00 p.m. The following bus lines will run until 2:30 a.m.: 128, 170, 200, 280, 301, 336, 544, 766, 881, 905, 2, 913. 1 January: The nMA, nMB, nMB1, nMC and nME bus lines will run from 2.30 a.m. to 8 a.m.. From 8 a.m. onwards, the underground network and the entire surface network will begin service. ZTL Limited Traffic Area: Between 9 December 2021 and 6 January 2022 and with the exception of the days of 25 and 26 December and 1 January, the city centre ZTL limited traffic area (daytime and night-time) and the A1 Tridente ZTL limited traffic area will continue running according to the following timetables: City centre ZTL limited traffic area (daytime) from Monday to Sunday (including midweek holidays): 6.30 a.m. to 6.00 p.m.. A1 (Tridente) limited traffic area: Monday to Sunday (including midweek holidays) from 6.30 to 7.00 p.m.. City centre limited traffic area (night-time): Friday and Saturday from 11 p.m. to 3 a.m. Taxis and minicabs. Until 31 December, those residing in Rome can - after registering with the SPID, CIE or CNS systems on buoniviaggioroma.romamobilita.it - take advantage (paying by credit card or debit card) of a 50% discount on the cost of the trip up to a maximum of € 20. The following can take advantage of this discount: women 18 to 26 years old, men 18 to 26 years old, the over 60s, disabled people over 18 who do not benefit from the services already provided by the Municipality.