Yn ôl y data gwrthdrawiadau diweddaraf sydd wedi eu cofnodi gan yr heddlu mae ugain o bobl yn cael eu lladd neu eu hanafu'n ddifrifol ar ffyrdd Cymru bob wythnos. Golyga hyn fod dros 1,000 o unigolion un ai’n cael eu lladd neu eu heffeithio'n ddifrifol gan wrthdrawiadau bob blwyddyn, gydag effeithiau enfawr ar eu teuluoedd a'u ffrindiau.
Twenty people are killed or seriously injured on Welsh roads every week, according to the latest police recorded collision data. That’s more than 1,000 lives lost or seriously affected by collisions every year, with huge impacts on their families and friends.