513.11 HARMFUL INTOXICANTS; POSSESSING NITROUS OXIDE IN MOTOR VEHICLE.
(a)   As used in this section, “motor vehicle” and “roadway” have the same meanings as in Chapter 301 of the Traffic Code.
(b)   Unless authorized under Ohio R.C. Chapter 3719, 4715, 4729, 4731, 4741 or 4765, no person shall possess an open cartridge of nitrous oxide in either of the following circumstances:
(1)   While operating or being a passenger in or on a motor vehicle on a roadway, or other public property open to the public for purposes of vehicular traffic or parking;
(2)   While being in or on a stationary motor vehicle on a roadway, or other public property open to the public for purposes of vehicular traffic or parking. (ORC 2925.33)