When I lived there, the total number of road deaths was featured at the top of the first page of the daily newspaper. In a perfect example of 'That which is measured is improved' this number was looked at by millions of people every day.
Seat belts were made mandatory in 1970 and that number dropped significantly. The acceptable blood alcohol level for driving was set at 0.05% and serious fines and jail time was instituted. And, in a move that would cause ACLU members to blanch, road blocks were set up randomly to pull over people to test their levels.
A Traffic Black Spot system was put into play where dangerous intersections, defined as having at least one serious accident a year for the last three years, were given money to be redesigned for safety. See the below link for an example of this.
Spending money on Black Spots is a great use of the Pareto principle where 20% of the intersections are causing 80% of the deaths. A few million spent here is saving billions elsewhere in addition to saving lives.
One of the more visible facets is the graphic advertising campaign that a government owned organization called TAC places on TV to scare people into driving safely. Below is a compilation video which aired during the Christmas driving season, a time similar to the Memorial day or Independence day weekends in the US for high road deaths. The video is graphic so be prepared to cringe at some of the images.
If you liked the compilation, follow the links to the individual videos.
How effective have these tactics been? Look at the graph below. It shows the amount of road deaths per 100,000 people over time. Notice the big drop in 1970 when seat belts were made mandatory. See the way road deaths have dropped far more than American road deaths over the same period. (Light Blue dots)
Click on the graph for an enlarged view, then press the back key to return.