The number of people who died on Irish roads dropped by an average of 57% in the past five years compared to 2004 to 2006, according to a report by the Road Safety Authority.
Two counties recorded no fatalities last year, achieving a 100% reduction in road deaths.
Laois and Leitrim went from five and seven deaths respectively in 2007 to none last year.
Only one county, Cavan, recorded an increase in road fatalities over the period.
Road deaths in Ireland have fallen every year since 2006.
In 2012, 162 people died on Irish roads, 24 fewer fatalities than the previous year when 186 people died and 51 fewer than 2010 when 212 people died on the roads.
The RSA's next Road Safety Strategy will span from 2013 to 2020.