Bicycle, Skateboard, Scooter and In-Line Skate Protective Headgear (Helmets)
Source:
Rule 735-102-0030 — Bicycle, Skateboard, Scooter and In-Line Skate Protective Headgear (Helmets), https://secure.sos.state.or.us/oard/view.action?ruleNumber=735-102-0030
.