Each time a SPEED FREEKS or TRUKK unit (excluding AIRCRAFT) from your army Advances, it can use its turbo. If it does, do not make an Advance roll for it; instead, until the end of the phase, models in that unit have a Move characteristic of 24" but can only move in one straight line, and until the end of the turn, ranged weapons equipped by those models have the ability and that unit cannot declare a charge.
Designer’s Note: When a unit uses its turbo, the models in that unit cannot pivot, and they cannot make a move of two or more straight lines (e.g. to navigate around obstacles). That unit also cannot declare a charge, even if another rule would let it declare a charge in a turn in which it Advanced.