Bratislava launches SOR electric buses; Poprad tests Troliga Bus’ electric bus, Slovakia January 25, 2018 | Europe News Slovakia’s Dopravní Podnik Bratislava (DPB) has commenced revenue services on the first four of 18 electric buses supplied by SOR Libchavy (SOR) under a EUR10.4-million contract (net) con... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password