It says larger, more productive trucks are needed on the road.
National Party caucus met this morning after last night's leadership vote.
Jacinda Ardern has outlined localised lockdown protocols if the virus returns in force.
All but $3m of the investment comes from the $50 billion Covid Response and Recovery fund.
Message to National supporters is the party is "absolutely back on track".
After ousting Simon Bridges, Muller says he is no longer the best person to lead National.
The new investment more than triples the funding for the Covid-related scheme.
Health, family cited in statement.
In the third of our election industry series, the sector wants a dedicated minister for hospitality.
Now only ACT and the Greens have not been similarly investigated.