The Road Safety Authority has called for tougher penalties for drivers after its latest study found that only 2 per cent of motorists on urban national roads stay within 30km per hour speed limits.

The just-published Free Speed Study, Survey Report 2018 shows that speeding on rural roads has increased, with one in four speeding, while over half of drivers in urban areas in Ireland continue to break speed limits.

The study of 16,672 vehicles found that...