Which statement describes when the Hazmat Switching Chart is used?

Answer: C — It is used only when moving placarded hazmat in a yard or industry

Hazardous materials require extra precautions, and the Hazmat Switching Chart is a yard-side guide that tells you how to move cars carrying placarded hazmat within a yard or an industrial site. It outlines the steps, clearances, and procedures needed when those placarded cars are being switched, so the move stays safe and compliant. Because the chart is tied to the presence of placarded hazmat, it only applies in situations where hazmat is actually being moved in that yard or facility. For shipments that aren’t hazmat, or for intersite moves that don’t involve placarded hazmat, you’d follow other standard switching rules. This makes the description that it is used only when moving placarded hazmat in a yard or industry the best fit.