Traffic on A trunk roads saw the largest increase (18.9%) compared to 2020, followed by motorways (14.3%), and then A county roads (12.8%).
Gwelwyd y cynnydd mwyaf mewn traffig ar gefnffyrdd A o’i gymharu â 2020 (18.9%), wedyn traffyrdd (14.3%), ac wedyn ffyrdd sirol A (12.8%).