and 18, and the discontinuing of Line 21. Fare payments When the Transmetro first opened, it accepted only coins, as the fare was set at Q1.00. After the national government began service of the Transurbano, a local bus service similar to the ones in North American cities, it also began to accept the SIGA smart card which had to be tapped to a reader. Passengers must pay the fare each time they enter the Transmetro, which means a two-way trip costs Q2.00, regardless of how far one goes. In November 2015, payments by the SIGA smart card were no longer accepted because of a multitude of problems and disagreements. A shift to contactless payment options was announced in early 2020. However, implementation of new fare gates, including accessible ones, was only completed at some stations on line 12 and 13. The modernization project, also included support for the SIGA smart card, which had been accepted until 2015. Additionally, the new gates would also feature support for NFC payments, as well as debit and credit cards. The gates received public support due to the COVID-19 pandemic, which discouraged many from the use of cash payments to reduce the risk of transmission. In early February 2021, payment by coins was no longer accepted, and payment by the new Tarjeta Ciudadana (Citizen Card) became the default payment method. The card can be acquired at stations along line 12, line 13, and convenience stores that have been allowed to sell it across the city. After purchasing the card at a cost of GTQ.20.00, users will receive 5 free rides and can register their name on to it using a system similar to cards such as the SUICA card in Japan. As an additional incentive for riders to purchase the card, the card offers 4 free rides daily for users with a disability. Along with the introduction of the new payment system, fares remained the same for the existing lines but increased for "Rutas Express," regional express services between Mixco and Guatemala City, to GTQ2.00. Routes Line 12 (Centra Sur) Line 12 starts from Zone 1 in Guatemala City, it runs through the Civic Centre, Bolivar Avenue, Trebol Station, Raul Aguilar Batres Way, and finally terminating at Centra Sur in Zone 12 of neighbouring Villa Nueva city. The line was certified as "Gold" under the BRT Standards in 2014. In the 2023 service update, all