There are calls for reforms of the courts system, after a finding that only 48% of drink driving offences resulted in a conviction in the District Court last year.
A report by RTÉ Investigates also revealed major regional differences in prosecution rates for drink driving.
The courts in Co. Westmeath had an 85% prosecution rate, while in Waterford it was just 34%.
Meanwhile, 43% of all District Court summonses were not served in 2015.
Labour Party justice spokesperson Sean Sherlock says a new approach is needed:
