Is it safe to pass another vehicle when approaching a steep hill or crest?

Passing another vehicle when approaching a steep hill or crest is generally considered unsafe due to limited visibility. On or near a hill, drivers may not be able to see oncoming traffic or obstacles in the road, making it risky to attempt overtaking another vehicle. The topography can hide vehicles that may be coming in the opposite direction, increasing the likelihood of a collision. Additionally, the lack of visibility makes it difficult for drivers to gauge the distance and speed of approaching vehicles. These factors contribute to a higher risk of accidents, hence the understanding that passing in such situations should be avoided for safety reasons. This highlights the importance of being cautious in areas where your view of the road is obstructed.