When approaching a hillcrest where you cannot see the other side...

When approaching a hillcrest where visibility is limited, particularly concerning oncoming traffic or obstacles, it's safest to position your vehicle in the rightmost lane. This choice minimizes the risk of a collision with vehicles that may be coming over the crest from the other side.

By staying in the rightmost lane, you are adhering to the typical traffic flow, which encourages safety by giving you the best chance to navigate around any hazards that may be present, such as a vehicle coming toward you or pedestrians. Additionally, keeping to the right allows for potential evasive actions if necessary, such as moving onto the shoulder, which might not be possible if you were in the center or leftmost lane.

Driving in the rightmost lane also helps in maintaining a clear sightline and positioning for turns, especially as the hillcrest may cause other drivers to take risks they normally wouldn't on flat terrain. Thus, selecting the rightmost lane when you have limited visibility is aligned with safe driving practices and enhances overall roadway safety for everyone.