Definitions.

In this chapter: (1g) “Alcohol beverages” has the meaning designated in s. 125.02. (1h) “Alcohol concentration” has the meaning given in s. 340.01 (1v). (1i) “Approved public treatment facility” has the meaning specified under s. 51.45 (2) (c). (1r) “Board” means the natural resources board. (2) “Controlled substance” has the meaning designated in s. 961.01 (4). (2d) “Controlled substance analog” has the meaning given in s. 961.01 (4m). (3) “Department” means the department of natural resources. (3m) “Drug” has the meaning specified in s. 450.01 (10). (4) “Hazardous inhalant” means a substance that is ingested, inhaled, or otherwise introduced into the human body in a manner that does not comply with any cautionary labeling that is required for the substance under s. 100.37 or under federal law, or in a manner that is not intended by the manufacturer of the substance, and that is intended to induce intoxication or elation, to stupefy the central nervous system, or to change the human audio, visual, or mental processes. (6) “Headlamp” has the meaning designated in s. 340.01 (21). (6m) “Headlamp barrier” means a fence, natural growth, difference in elevation or other means of restricting the view that users of an adjacent roadway have of headlamps on a snowmobile trail. (7) “Highway” has the meaning designated in s. 340.01 (22). (8) “Hours of darkness” has the meaning designated in s. 340.01 (23).