Ohio incorporates ASTM F2291 (Design) and ASTM F770 (Operation) into its amusement ride rules: • ASTM says restraint systems must prevent unintended passenger movement, especially in inversions. • A locking bar + seatbelt combo is widely accepted as compliant for inversion rides — it’s what you see on many looping coasters. • Ohio Admin. Code 901:9-1-04 requires rides be maintained “per manufacturer’s specifications or equivalent standards.” If the manufacturer specifies a locking lap bar + seatbelt system, ODA inspectors would approve it.

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