If a vehicle requires semi-annual inspections, how often must it be inspected?

The requirement for semi-annual inspections indicates that a vehicle must be inspected twice within a single year, specifically six months apart. This means that if a vehicle falls under this category, it needs to undergo an inspection every six months to ensure it meets safety and emissions standards. This frequency helps maintain vehicle safety and compliance with state regulations, providing assurance that the vehicle is roadworthy and in good condition. Therefore, the correct answer reflects the necessary schedule for inspections mandated by the semi-annual requirement.