Figure 2: Quarterly police-reported road collisions on roads with a 20 or 30mph speed limit (combined) in Wales, 2010 Q1 to 2024 Q2
Ffigur 2: Gwrthdrawiadau ar ffyrdd sydd â therfyn cyflymder o 20mya neu 30mya (wedi’u cyfuno) a gofnodwyd gan heddluoedd yng Nghymru fesul chwarter, Ch1 2010 i Ch3 2024