DPB to replace 60 per cent trolleybus/tram fleet by 2016 June 24, 2014 | Europe News Dopravny Podnik Bratislava (DPB), the public transport provider of Slovakia's capital Bratislava, is planning to renew up to 60 per cent of its fleet of trolleybuses and trams by 2016, at an investmen... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password