Changes in drink driving laws and policies
1. 1925: First law making driving while drunk an offence, but no clear definition of drunk and no legal limit
2. 1967: Road Safety Act introduced a blood alcohol limit of 80mg per 100ml of blood
3. 1968: First breathalysers introduced for roadside use
4. 1983: High Risk Offender scheme introduced for convicted drivers with an alcohol problem
5. 1991: New offence of causing death by driving while under the influence of alcohol or drugs introduced with a compulsory prison sentence
6. 2014: Penalty for a first drunk driving offence increased to up to 6 months imprisonment, an unlimited fine and a driving ban for a least one year, with heavier penalties for repeat offenders