Poorly maintained pavements, poor crossing facilities and poor lighting among other things can contribute to this figure (Musselwhite C.B.A. 2018).
Gall palmantau sydd wedi'u cynnal a'u cadw'n wael, cyfleusterau croesi gwael a goleuadau gwael, ymhlith pethau eraill, gyfrannu at y ffigur hwn (Musselwhite C.B.A, 2018).