A wnaiff y Gweinidog Cabinet amlinellu ystadegau ynghylch damweiniau ar ffyrdd sydd â therfynau cyflymder amrywiol ar ôl gadael parthau 20mya diofyn ledled Cymru?
Wedi'i ateb gan Dirprwy Weinidog dros Drafnidiaeth | Wedi'i ateb ar 11/06/2026
The Welsh Government publishes data on police recorded road collisions by area and speed limit each quarter on StatsWales and in an interactive map. The latest data is for the last quarter of 2025 which was published on 4 June 2026. (Saesneg yn unig)