Section 31-5-222 - Stop signs and yield signs(a) Preferential right-of-way may be indicated by stop signs or yield signs as authorized in W.S. 31-5-503.(b) Except when directed to proceed by a police officer, every driver of a vehicle approaching a stop sign shall stop at a clearly marked stop line, but if none, before entering the crosswalk on the near side of the intersection, or if none, then at the point nearest the intersecting roadway where the driver has a view of approaching traffic on the intersecting roadway before entering it. After having stopped the driver shall yield the right-of-way to any vehicle in the intersection or approaching on another roadway so closely as to constitute an immediate hazard during the time when the driver is moving across or within the intersection or junction of roadways. The driver shall yield the right-of-way to pedestrians within an adjacent crosswalk.(c) The driver of a vehicle approaching a yield sign shall in obedience to the sign slow down to a speed reasonable for the existing conditions and, if required for safety to stop, shall stop at a clearly marked stop line, but if none, before entering the crosswalk on the near side of the intersection, or if none, then at the point nearest the intersecting roadway where the driver has a view of approaching traffic on the intersecting roadway before entering it. After slowing or stopping, the driver shall yield the right-of-way to any vehicle in the intersection or approaching on another roadway so closely as to constitute an immediate hazard during the time the driver is moving across or within the intersection or junction of roadways. The driver shall yield the right-of-way to pedestrians within an adjacent crosswalk. If the driver is involved in a collision with a pedestrian in a crosswalk or a vehicle in the intersection or junction of roadways, after driving past a yield sign without stopping, the collision shall be deemed prima facie evidence of his failure to yield the right-of-way.