. "The Oslo trolleybus system was a trolleybus network operated by Oslo Sporveier in Oslo, Norway between 15 December 1940 and 15 February 1968. The system measured at the most 26.1 km on four lines."@en . . "1940-12-15Z"^^ . . "Oslo trolleybus"@en . . "96000"^^ . "4"^^ . "1940Z"^^ .