What does alternating red and green signals indicate for the movement of vehicles, equipment, and personnel?

The indication of alternating red and green signals serves as a general warning signal to exercise extreme caution. This signaling method is commonly used in aviation and ground control to alert personnel, vehicles, and equipment that they must be extremely vigilant and aware of their surroundings. It acts as an advisory that while it may not signify an outright stop, there is a potential hazard or important information that all individuals and operators should be mindful of.

When encountering such a signal, the expectation is that individuals will maintain situational awareness and be prepared to respond accordingly to any changes or developments in their environment. Therefore, this signal plays a crucial role in ensuring safety within active zones where there may be a mix of movement and potential hazards impacting operations.