 The 12 Trolza trolleybuses were delivered between mid-April 2017 and mid-May 2017.A public ceremony to celebrate the "inauguration" of new line Q was held on 13 July 2017, with all 12 new trolleybuses on display, and service began on 14 July.The system currently comprises two routes, designated as Line K (12.6 km long) and Line Q (12.8 km).