What does a stationary amber light at a crossing indicate?

A stationary amber light at a crossing indicates that drivers must stop. This signal is an essential part of traffic control, ensuring that vehicles and pedestrians can navigate intersections safely. When the amber light is illuminated, it serves as a warning that the traffic signal is about to change, typically from green to red.

In this context, stopping at the amber light allows for compliance with imminent traffic control changes, preventing potential accidents or confusion for those crossing the road. Understanding this signal is vital for safe driving practices, enabling drivers to respond appropriately and not enter an intersection while it is still unsafe to do so.

The other options may imply actions that could lead to unsafe situations; for example, proceeding with caution or slowing down could result in vehicle collisions if drivers misinterpret the amber light as a cue to move forward rather than stop. Therefore, recognizing the correct response to a stationary amber light is key to ensuring road safety.