Lights designed to prevent runway incursions were out of service when a Japan Coast Guard plane collided with an arriving Japan Airlines Co. passenger jet at Tokyo’s Haneda Airport on Jan.

Larsen had not used the pilot-controlled runway lights and had turned off the airplane’s landing light immediately after takeoff. Unable to see in the darkness, Mr. Larsen most likely lost his ...

“Based on the performed study, the use of simplified runway status lights is expected to be effective at reducing runway incursion ... air traffic controllers to prevent these incursions,” Mott said. ...