What safety measure should be taken when using the grader near slopes?

Using a grader near slopes presents unique challenges and risks, particularly concerning the potential for tipping or losing control of the machine. The recommended safety measure of never operating close to edges without observation is crucial because it emphasizes the importance of awareness of the surrounding environment. By ensuring that operators maintain a clear line of sight and are fully aware of the edge conditions, they can better assess the risks involved and take appropriate action to avoid potential accidents.

This practice promotes a proactive approach to safety, allowing the operator to gauge the stability of the ground and the proximity to the edge, which can be vital to maintaining control of the grader. Observing the area while operating provides critical information about any changes in terrain or slope integrity that could affect the safe operation of the machine.

The other options, while they may seem beneficial in various contexts, do not directly address the specific hazards posed by operating a grader near slopes in the same effective way.