A wnaiff y Gweinidog Cabinet gadarnhau faint o filltiroedd o ffyrdd yng Nghymru sy'n destun y terfyn cyflymder diofyn o 20mya?
Wedi'i ateb gan Dirprwy Weinidog dros Drafnidiaeth | Wedi'i ateb ar 03/06/2026
Following the change to 20mph for the default speed limit on restricted roads in Wales on 17 September 2023, there were around 13,000 km (8,078 miles) of roads subject to a 20mph speed limit in Wales. However, we are still receiving minor updates from some highway authorities.
(Saesneg yn unig)