(BUTTON) Trade unions vow to fight government over strike legislation to 'keep Britain moving' during strikes This year has been plagued by travel chaos, caused by months of industrial -- The government is pressing ahead to introduce legislation which will require transport workers to run a minimum service when strikes are taking place. -- But trade unions have insisted the proposals will undermine workers' right to strike and have promised to defend their members. New chancellor warns of 'tough decisions' ahead - Politics latest -- Liz Truss is aiming to ensure transport services, including rail, tubes and buses, cannot be completely shutdown when workers go on strike. "The government stood on a manifesto commitment to introduce minimum service levels. As we have seen only too often in recent months, it is wrong that strikes are preventing hard-working people and families up and down the country from getting to work, doctors' appointments and school," a government source said. More on Rail Strikes * Rishi Sunak must 'step up to the plate' to break deadlock and stop using pay review bodies as a 'human shield', TUC boss says * Train strikes: Network Rail says it is 'on the right path' towards securing deal to stop walkouts * Rail workers warned there is 'not a bottomless pit of money' as strikes continue - but RMT boss Mick Lynch says union's proposals are 'modest' Related Topics: * Rail strikes "That is why we are introducing this legislation, to keep Britain -- TUC general secretary Frances O'Grady said the proposals "undermine the right to strike" and called for the government to "stop blocking negotiations" to allow workers and unions to reach an agreement