The three businesses failed to follow basic machine safety standards, WorkSafe says.
All northbound lanes on SH1 were closed after a "blockage" at 1:45pm after the Ōteha Valley off-ramp.
Two people have died after their vehicle went down a bank, hit a tree and burst into flames.
The BurgerFuel car was part of Saturday's Santa Parade, where it injured pedestrians.
The van carrying nine people crashed after crossing the centre line on SH1 near Mt Pleasant in June 2022.
Her survival was "nothing short of a miracle".
The charges come four years after the tragic incident occurred.
A group of surf lifesavers were on their way to a competition when they were suddenly called into action.
Police are investigating the cause of three different accidents that occurred today.
