The coronavirus (COVID-19) pandemic had a significant impact on road traffic in Wales in 2020 as people were restricted on how, where and why they could travel.
Cafodd pandemig y coronafeirws (COVID-19) effaith sylweddol ar draffig ffyrdd yng Nghymru yn 2020, gan fod pobl wedi'u cyfyngu o ran sut, ble a pham y gallent deithio.