Mae Peter Brett Associates, mewn partneriaeth â Beaufort Research a Loxley Consultancy, wedi cynnal gwerthusiad terfynol o Brosiect Atgyfnerthu Rheilffyrdd y Cymoedd.
Peter Brett Associates, in partnership with Beaufort Research and Loxley Consultancy has undertaken a final evaluation of the Valleys Rail Strengthening (VRS) Project.