A wnaiff y Gweinidog gadarnhau a yw ardaloedd arbrofol terfyn cyflymder 20mya wedi'u hanelu'n bennaf at ardaloedd preswyl neu ar ffyrdd sy'n rhedeg drwyddynt/o'u hamgylch?
Wedi'i ateb gan Y Dirprwy Weinidog Newid Hinsawdd | Wedi'i ateb ar 28/01/2022
The Phase One Settlements for 20 mph have an exceptions process that is applied based on the level pedestrian movement and function, (e.g. residential density, retail centre, school), which can be applied by each highway authority to determine whether a section of road should remain 30 mph.