During which situation should the road grader's blade be kept raised?

Keeping the road grader's blade raised while reversing is crucial for safety and operational efficiency. When a grader is moving in reverse, having the blade elevated helps prevent it from catching on the ground or any obstacles, which could lead to damage to the equipment or potentially cause accidents. It also allows the operator better visibility while maneuvering.

In contrast, potentially confusing situations concerning maintaining different blade positions have implications. For example, on rough terrain, keeping the blade lower can assist in smoothing the surface or grading effectively, while approaching a hill may require the blade to be adjusted for better control and stability. Operating on smooth surfaces generally allows for more flexible blade positions, but raising it when reversing is always a safe practice to minimize risks.