A bulldozer operator is pushing material on a steep uphill grade above an active roadway. Visual inspection reveals an old, partially stabilized landslide scar just below the work area. What is the long-term hazard that must be considered with this operation?

Question: A bulldozer operator is pushing material on a steep uphill grade above an active roadway. Visual inspection reveals an old, partially stabilized landslide scar just below the work area. What is the long-term hazard that must be considered with this operation?

Answer options: ✅ The addition of material and vibration from the bulldozer could reactivate the old landslide.

• The bulldozer may lose traction and slide downhill.
• The operator may suffer from fatigue due to the steep grade.
• Increased fuel consumption of the bulldozer on the incline.

Correct answer: The addition of material and vibration from the bulldozer could reactivate the old landslide.

Explanation: Working on or above old landslide scars, especially with heavy equipment that imposes additional weight and vibration, significantly increases the risk of reactivating the unstable slope. This can lead to a catastrophic landslide affecting the roadway below. A geotechnical assessment is crucial.