In the case of a displaced threshold, what colour do runway edge lights show in the approach direction?

Runway edge lights, when approaching a displaced threshold, are illuminated in red. This specific color indicates to pilots that they are approaching an area of the runway that is not suitable for landing, which is important for safety. The displaced threshold marks a point where the runway usable for takeoff differs from that usable for landing. The red lights serve as a visual cue to alert pilots and ground vehicles that they are nearing the end of the usable runway space, emphasizing the need for caution as they prepare for landing. This clear and distinct signaling is vital for maintaining safety in aviation operations, particularly at busy airports like YYZ. Other colors, such as white or blue, serve different purposes and are used in other contexts within airspace management.