Haul Truck Runaway on a Downgrade

A loaded haul truck gathers speed on the descent. The dangerous moment is before control is lost. Notice changing speed, braking response, road condition, and the escape route while choices still exist. Communicate early and follow the site's runaway and emergency procedure. Never improvise a maneuver or place other equipment in the truck's path.

Haul Truck Runaway on a Downgrade is presented as a decision situation. The card holds on the warning moment so a learner can notice changing conditions, identify exposed people and equipment, and choose the next safe action before escalation.

The value is not spectacle or hindsight. It is learning to recognize how mobile equipment risk develops in surface pit work, then connecting that recognition to role-specific communication, isolation, withdrawal and escalation.

1. Pause the task and establish positive communication before equipment or people move.
2. Re-establish exclusion zones, right-of-way, visibility, braking and ground-condition controls.
3. Use the approved traffic-management or operating procedure under competent site supervision.
4. Restart only after the responsible roles confirm the changed condition is controlled.

No frequency ranking is published in this preview. Incident-specific frequency and trend claims remain behind the cited-evidence gate.

Potential consequences vary by site and task. This preview avoids invented tolls, probabilities and causal certainty; approved sources and local procedures govern.