TOKYO - Following the fatal collision between a Japan Airlines jetliner and a Japan coast guard plane at Tokyo’s Haneda Airport in January, construction began Oct 2 on new runway status lights at the C5 taxiway near the accident site.

These lights are red lights embedded in a runway and taxiway that illuminate to alert pilots when two aircraft are taking off and landing on the same runway, or when two aircraft might be entering a runway at the same time.