A further £15m has been pledged towards a possible new underground network for Bristol.
Mayor Marvin Rees made the announcement in his last State of the City speech.
He said “Bristolians have waited long enough” for a new transport network to alleviate the city’s traffic problems.
It was his final address as the city’s mayor after voters opted to dispense with the role and return to a committee system.
Mr Rees, who became Bristol’s elected mayor in 2016, said he hoped city politicians could work together and “continue the momentum” his administration had started.