When operating a motor grader, what is a crucial rollover prevention technique when working near the edge of an embankment or ditch?

Question: When operating a motor grader, what is a crucial rollover prevention technique when working near the edge of an embankment or ditch?

Answer options:

• Maintaining a high travel speed to prevent the wheels from slipping.
• Always keep the moldboard extended as far as possible over the edge. ✅ Working parallel to the edge with the drive wheels furthest from the edge, ensuring the centre of gravity remains on stable ground.
• Operating with the articulation joint fully bent towards the ditch for better reach.

Correct answer: Working parallel to the edge with the drive wheels furthest from the edge, ensuring the centre of gravity remains on stable ground.

Explanation: Positioning the drive wheels furthest from the edge ensures the machine's main weight and centre of gravity remain on stable ground. This technique maximizes the base of support and reduces the risk of the grader overturning into the ditch. Ontario Reg. 213/91 Section 96 (4) states 'No powered mobile equipment shall be operated on a grade... where the grade may cause the equipment to become unstable'.