If a car or engine partially runs through a switch, what action must be taken until it is repaired?

When a car or engine partially runs through a switch, the recommended action is to not change direction. This is critical for safety and operational integrity. Changing direction while the equipment is in such a state might lead to misalignment or further damage to the switch, as well as creating potential hazards for crew members and other rolling stock nearby.

Keeping the car or engine stationary until a proper assessment can be made ensures that any risk of accidents is minimized. By allowing personnel to evaluate the situation, they can determine the extent of the issue and decide the correct repairs or adjustments needed. This approach is essential to maintain safety protocols and ensure reliable operations within the rail yard.

If the other options were chosen, they may lead to unsafe conditions or improper handling of the situation, so maintaining the current position of the car or engine is the most responsible action to take.