Before you enter a road from an alley, what must you do?

When leaving an alley, a driveway, or a parking lot to enter a roadway, stop before driving onto a sidewalk or onto the sidewalk area and proceed slowly. Yield the right-of-way to any pedestrians and approaching vehicles. When entering a roadway from a driveway, an alley, or a private road, stop and yield to roadway traffic before you proceed. [Required Stops, Braking/Stopping, Rules of the Road, Wyoming Rules of the Road], [WY Stat 31-5-506]