Mae’r senario waethaf sy’n rhesymol ei thybied sydd wedi’i chyhoeddi gan Lywodraeth y DU yn pwysleisio y gallai 40-70% o gerbydau nwyddau trwm sy’n cyrraedd porthladdoedd ar ôl diwedd y cyfnod pontio gael eu gwrthod am nad oes ganddynt y dogfennau cywir. Mae hyn yn golygu traffig sylweddol i Gaergybi. Bydd y traffig hwnnw’n chwilio am rywle i barcio wrth i gerbydau fynd ati i gael gafael ar y dogfennau cywir a chwblhau’r archeb neu benderfynu nad ydynt yn gallu cwblhau’r daith.
The reasonable worst case scenario published by the UK Government highlights that 40-70% of HGVs arriving at ports after the end of the Transition Period could be turned away as they do not have the right documentation. For Holyhead this represents a significant amount of traffic, which will be looking to find somewhere to park whilst they either obtain the documentation and complete their booking or have to decide they are unable to complete their journey.