What is the function of amber lights at taxiway intersections?

Amber lights at taxiway intersections serve a crucial function by alerting pilots to the entry point of the intersection. These lights are positioned strategically to enhance visibility and safety, particularly in conditions where pilots may need to make quick decisions while taxiing. The amber color is universally recognized in aviation as a caution signal, indicating the need for awareness and possibly reduced speed as the pilot approaches the intersection.

In this scenario, the use of amber lights helps to prevent potential conflicts between aircraft and ground vehicles, guiding pilots to proceed with caution and be prepared for the presence of other aircraft or vehicles at the intersection. This safety measure is particularly important at busy airports like YVR, where multiple aircraft may be maneuvering simultaneously.

The other options do not accurately reflect the specific function of amber lights at taxiway intersections. For instance, while active runway presence may be indicated by different types of lights, it is not the primary role of amber lights at taxiway intersections. Similarly, the center line of the runway is marked by different types of markings and lights, while the beginning of a taxiway is typically denoted by different signals as well. Thus, the primary role of amber lights is indeed to provide alertness about intersection entry to ensure the safe movement of aircraft on the ground