Wyo. Stat. § 31-5-602: Right-of-way in crosswalks.

(a) When traffic-control signals are not in place or not in operation, the driver of a vehicle shall yield the right-of-way by slowing down or stopping if need be to yield, to any pedestrian within or entering a crosswalk at either edge of the roadway.

(b) When traffic-control signals are not in place or not in operation at a school crosswalk, the driver of a vehicle shall yield the right-of-way to any pedestrian within or entering a school crosswalk at either edge of the roadway by slowing down or stopping.

(c) No pedestrian shall suddenly leave a curb or other place of safety and walk or run into the path of a vehicle which is so close as to constitute an immediate hazard.

(d) Subsection (a) of this section does not apply under the conditions stated in W.S. 31-5-603(b).

(e) Whenever any vehicle is stopped at a marked crosswalk or at any unmarked crosswalk at an intersection to permit a pedestrian to cross the roadway, the driver of any other vehicle approaching from the rear shall not overtake and pass the stopped vehicle.