Fatalities involving articulate and heavy rigid trucks have decreased overall in the past three years.
Newly-released Bureau of Infrastructure, Transport and Regional Economics figures show fatal crashes involving heavy rigid trucks have decreased by an average of 3.2 per cent a year over the three years to December 2015.
And fatal crashes involving articulated trucks decreased by an average of 4.5 per cent per year over the three years to December 2015.
The Fatal Heavy Vehicle Crashes Australia quarterly bulletin for October-December 2015 found fatal truck crashes for the third year in a row around the 100 mark after being above 120 for most of the past 10 years.
It reported that fatal crashes involving heavy rigid truck decreased by 5.3 per cent compared with the corresponding period one year earlier, but found a nearly one per cent increase in those involving articulated vehicles.