To illustrate how radical the improvement has been, Ms Rose said that in 1973, 843 people died on the roads.
If people were dying at the same rate today, given the number of cars now, there would be about 1750 road deaths this year.
"It's down to roads improving and particularly things like divided traffic rather than dual carriageways; it's about making our speeds a lot more suitable for the location, such as a reduction of speed around schools and shopping precincts where people are very vulnerable; it's also about some of the legislation that has been put in place to ensure that drivers who display risky driving behaviour are removed from the network."
Ms Rose urged drivers to be extra-vigilant during the summer holiday period, which tends to be the time of year when the highest number of people die needlessly on our roads.
"Those Christmas events will start in the next couple of weeks so from mid-November through to the end of January it's a high level of celebration ... , people making the most of the weather and travelling greater distances and travelling on roads that they may not be used to.
"One of the most important things, I'd say, is when you're socialising with people over the holidays and you see a person get in a car who you think has had too much to drink, this is actually about when we become good mates, good citizens by intervening and helping others make good decisions."