A similar requirement is in place for a car that is used by a child-minder to take children to/from school, but is otherwise used for private, social or domestic purposes.
Mae gofyniad tebyg ar waith ar gyfer ceir a ddefnyddir gan warchodwyr plant i fynd â phlant yn ôl a blaen i’r ysgol, ond a ddefnyddir fel arall at ddibenion preifat, cymdeithasol neu ddomestig.