Final answer:
It is true that equipment should not be placed in front of exit doors, as this is a key safety regulation to enable safe evacuation in emergencies.
Step-by-step explanation:
The statement about equipment such as incompatibles tractor/tractor/trains not being placed permanently or temporarily in front of an exit door is likely referencing safety and health regulations. The placement of any equipment obstructing an exit can be a significant safety hazard in the event of an emergency. Therefore, the answer to this situation would be: a) True. It is crucial to keep exit doors clear to ensure a safe and orderly evacuation if necessary. This is because it can block the exit and pose a safety hazard in case of an emergency.