Private contractors carrying out work will be required to hold a valid street works accreditation card and have at least £10 million public liability indemnity.
Bydd yn ofynnol i gontractwyr preifat sy'n gwneud gwaith feddu ar garden achredu ddilys ar gyfer gwaith stryd ac o leiaf £10 miliwn o indemniad atebolrwydd cyhoeddus.