I gyd-fynd â’r Rheoliadau Sefydlu, mae’r Rheoliadau Cyd-bwyllgorau Corfforedig (Swyddogaethau Trafnidiaeth) (Cymru) 2021 a’r Memorandwm Esboniadol cysylltiedig wedi eu gosod. Mae’r rheoliad hwn yn sicrhau’r addasiadau angenrheidiol i’r Ddeddf Trafnidiaeth 2000 i’w gwneud yn ofynnol i’r Cyd-bwyllgorau Corfforedig uchod ddatblygu polisïau trafnidiaeth a sefydlu cynlluniau trafnidiaeth rhanbarthol yn eu hardaloedd.
Alongside the Establishment Regulations the Corporate Joint Committees (Transport Functions) (Wales) Regulations 2021 and accompanying Explanatory Memorandum have also been laid.  The regulations make the necessary modifications to the Transport Act 2000 to require the above Corporate Joint Committees to develop transport polices and establish a regional transport plan for their areas.