VDL to supply 50 electric buses to RET, Netherlands November 20, 2020 | Europe News VDL Bus & Coach (VDL) has secured a contract from Rotterdamse Elektrische Tram (RET), the public transport operator in Rotterdam, to supply up to 50 new VDL Citeas SLF-120 electric buses equipped with... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password