045-23 Wyo. Code R. § 23-3
(a) Department means the Wyoming Department of Transportation.
(b) State highway system means all highways under the jurisdiction of the Wyoming Department of Transportation.
(c) Daylight means one hour after sunrise to one hour before sunset.
(d) Permit means an application approved by the Department to conduct a special event or athletic event on a state highway outside the corporate limits of any city or town.
(e) "Special event or athletic event" means any event which is held outside the corporate limits of any city or town on a state highway but cannot comply with all applicable traffic statutes or ordinances.
(f) "Partial or complete closure of a state highway" means the closing to traffic of anyroad anyroad-wayway, lane or other portion of a state highway or any other restriction to the normal use of a highway.
045-23 Wyo. Code R. § 23-3