There are significant health inequalities related to road traffic accidents, with children and young people living in poor areas at a higher risk of being harmed on the road.
Mae pobl mewn rhai grwpiau sydd mewn perygl, gan gynnwys babanod a phlant ifanc, menywod beichiog, a phobl ag imiwnedd gwan, yn wynebu mwy o berygl o gymhlethdodau o ganlyniad i'r frech goch.