The Automobile Association says retro-fitting the roads to make them more forgiving could help save up to 90 lives each year.
Some 373 people were killed on the roads last year and 13 died during the Christmas holiday period.
The association says new ways must be found to stop so many people dying and being maimed.
Spokesperson Simon Lambourne says upgrades such as wider corners, more median barriers and removal of trees in dangerous places would dramatically reduce the road toll.
Mr Lambourne says if the Government spent $150 million a year for the next 10 years, it would cut the road toll by between 70 and 90 deaths.
He says safer driving and safer cars are also essential to bring down the number of casualties.