There were 35 accident cluster sites which resulted in 147 accidents with a personal Injury and of these 17 were KSI accidents.
Roedd 35 safle clwstwr damweiniau a arweiniodd at 147 damwain a achosodd anafiadau personol ac roedd 17 o'r rheini'n ddamweiniau lle cafodd pobl eu lladd neu eu hanafu'n ddifrifol.