Un o'r argymhellion allweddol yw'r angen i ledu Twnnel Hafren fel bod modd cludo cynwysyddion nwyddau rhyngfoddol mawr yn effeithlon i Gymru - un o'r marchnadoedd twf allweddol ar gyfer cludo nwyddau. Rwyf wedi gwneud sylwadau i Lywodraeth y DU ac i Network Rail ar y mater hwn, a bellach rwyf wedi cael cadarnhad y bydd y gwaith lledu'n mynd rhagddo ar yr un pryd â'r gwaith i drydaneiddio'r twnnel.
A key recommendation is the need for gauge enhancement in the Severn Tunnel to enable the efficient transportation of large intermodal freight containers into Wales – one of the key growth markets for freight. I have made representations to the UK Government and Network Rail on this matter and have now received confirmation that the gauge enhancement works will go ahead at the same time as electrification works to the tunnel.