Pam na chafodd costau ac effaith economaidd y cynllun eu cynnwys yn y taflenni gwybodaeth terfyn cyflymder o 20mya a ddosbarthwyd i bob cartref yng Nghymru?
Wedi'i ateb gan Y Dirprwy Weinidog Newid Hinsawdd | Wedi'i ateb ar 14/09/2023
The “Get Ready for 20mph” leaflets distributed to every home in Wales are to make everyone aware of the change, how it will work, and why we are doing it. Details of the costings and economic impact are available on the website.