The study also concluded that addressing the perceived problems on the A40 would only form part of the solution to improving access to the Haven Waterway Enterprise Zone and Murco site.
Hefyd, daeth yr astudiaeth i’r casgliad mai dim ond ateb rhan o’r broblem ar yr A40 fyddai gwella’r mynediad i Ardal Fenter Dyfrffordd y Daugleddau a safle Murco.