It says larger, more productive trucks are needed on the road.
But does he really have the power?
Judith Collins says National will use fast-track law for big transport projects.
Some say they are disadvantaged relative to their Australian counterparts
Petrol prices fell 12% in the June quarter.
Judith Collins is keeping her predecessors close.
Pair step back prior to Collins announcing her new Cabinet.
Politics: New leader says colleagues had previously not viewed her as a caucus-uniter.
The $64,000 question: can Judith Collins attract the support of the "median voter"?
Judith Collins says Michael Woodhouse still has her confidence though.