Ar hyn o bryd mae Swyddogion Traffig Llywodraeth Cymru ar batrôl ar goridor yr A55/A494/A550 o Bont Britannia ar yr A55 i'r ffin â Lloegr yn Sealand a Brychdyn.
Welsh Government Traffic Officers currently cover the A55/A494/A550 corridor from the A55 Britannia Bridge through to the English border at Sealand and Broughton.