What protective measure should be taken when operating on a slope?

When operating on a slope, ensuring proper gear usage is crucial for maintaining control and stability of the crawler tractor. Using the right gear can optimize the tractor's power and torque, allowing it to navigate the incline safely. Lower gears provide more pulling power and better traction, which are essential when ascending or descending slopes. This control helps prevent the tractor from slipping or rolling over, significantly enhancing operator safety.

In contrast, while minimizing the weight of the load may have some benefits for stability, it does not guarantee safe operation on slopes, especially if the gear is not appropriate. Increasing tire pressure can adversely affect traction and grip, making it riskier on uneven surfaces. Raising the implement high could lead to instability, as a higher center of gravity increases the risk of tipping over, particularly on slopes. Therefore, focusing on the correct gear usage is the most effective protective measure when operating on a slope.