Mae’r rhwydwaith wedi bod yn destun sawl adolygiad, archwiliad a gwaith craffu annibynnol gan Bwyllgor Llywodraethu Corfforaethol yr Economi a Thrafnidiaeth. Arweiniodd y rhain at argymhellion ynghylch gwneud gwelliannau mewn meysydd fel llywodraethu, prosesau a gwybodaeth/data rheoli.
The network has been subject to a number of independent reviews, audits and scrutiny by the Economy and Transport Corporate Governance Committee. These resulted in recommendations being made to make improvements in areas such as governance, processes and management information/data.