Change in the policy on drink driving
1. 1925 - First laws regulating driving of a car
2. 1930, 1960, 1962 - Law modified, penalties got progressively stiffer
3. 1967 - Introduction of legal maximums for alcohol while driving and the introduction of the roadside breathalyser
4. 2002 - Drivers convicted of causing death by driving when under the influence required to pass an extended test before being allowed to drive again
5. 2004 - Maximum penalty for causing death by driving when under the influence increased to 14 years