What does a flashing amber light mean at a junction?

Answer: B — Proceed with caution

A flashing amber light at a junction indicates that drivers should proceed with caution. This signal alerts drivers to be prepared for potential hazards and to exercise careful judgment as they approach the junction. It serves as a warning that the situation may require increased attention, whether that involves checking for pedestrians, cyclists, or other vehicles that may be present. The intent behind this signal is to ensure that drivers remain vigilant and ready to react appropriately, whether that means slowing down, stopping, or proceeding through the junction with care. It's a way of promoting safety and ensuring that all road users are aware of their surroundings before making a move. In contrast, other signals or lights such as a solid red would mean to stop immediately, and a solid green would typically allow for free movement without caution. Thus, understanding the specific meaning of flashing amber lights helps in adhering to road safety protocols effectively.