Wyoming Statutes Title 31. Motor Vehicles § 31-5-203. Rules governing overtaking on the left

(a) The following rules shall govern the overtaking and passing of vehicles proceeding in the same direction, subject to those limitations, exceptions and special rules hereinafter stated and those contained in subsection (c) of this section:

(b) A driver of a passenger car, motorcycle, autocycle or pickup truck, not towing any other vehicle, may exceed the speed limit by up to ten (10) miles an hour while passing another vehicle traveling at less than the legal maximum speed, in order to safely pass the vehicle. The overtaking vehicle shall return to the right-hand lane and reduce speed to the posted speed limit as soon as practicable. This subsection shall be applicable only upon roadways divided into two (2) lanes for two (2) way movement of traffic and where the posted speed limit is fifty (50) miles per hour or greater. This subsection shall not be applicable in construction zones. Passing a vehicle pursuant to this subsection shall be subject to all other applicable motor vehicle laws. A driver of a vehicle exceeding the ten (10) mile per hour limitation of this subsection shall be subject to the full penalty or penalties applicable to exceeding the posted speed limit by the actual speed of the vehicle. As used in this section, “motorcycle,” “passenger car,” “pickup,” “autocycle” and “vehicle” mean as defined in W.S. 31-1-101.

(c) The driver of a motor vehicle overtaking and passing a bicycle or electric bicycle, which is operating lawfully, proceeding in the same direction shall, when space allows, maintain at least a three (3) foot separation between the right side of the driver's motor vehicle, including all mirrors and other projections from the motor vehicle, and the bicycle or electric bicycle.