You can apply online for a Temporary Traffic Regulation Order​​​​. You will need to register first and then select Temporary Traffic Orders from the dropdown list.
Gwnewch cais GRhTDD ar-lein​​​​​​​​​. Bydd angen i chi gofrestru yn gyntaf ac yna dewis y ddolen at ‘Gorchmynion Traffig Dros Dro’ o’r gwymplen.