A wnaiff y Gweinidog gadarnhau pa gamau y mae wedi'u rhoi ar waith i alluogi cynghorau i newid y terfyn cyflymder yn ôl i 30 mya ar ffyrdd priodol?
Wedi'i ateb gan Y Dirprwy Weinidog Newid Hinsawdd | Wedi'i ateb ar 22/01/2024
In consultation with their local members and communities, and based on Welsh Government guidance, councils made decisions on which roads should be exempt from the default 20mph limit.
As highway authorities, councils have the powers to set local speed limits and there is nothing stopping them from reassessing any of their roads if they wish.