Which of the following is an acceptable exemption when driving under emergency circumstances?

Stopping in a box junction during emergency circumstances is an acceptable exemption as it allows emergency vehicles to navigate traffic more effectively. Box junctions are typically designed to keep intersections clear to prevent congestion; however, emergency responders sometimes need to stop in these areas to respond to urgent situations, prioritize patient care, and ensure their own safety while en route to an emergency.

In contrast, leaving the engine running unattended is generally discouraged due to safety and security concerns. Parking in a bus stop without a valid reason can disrupt public transport and may also lead to penalties. Parking on yellow lines is restricted to discourage stopping in areas that could impede traffic flow or create hazards, except for emergency situations where the need to respond to an urgent call takes precedence. Understanding these regulations helps emergency drivers make informed decisions while managing their response.