But the reduced vertical distance between air lanes means that this could put the plane on collision course with a third aircraft much sooner than in the past. (newscientist.com)
Such close quarters puts the moons on collision courses. (sciencenews.org)
This system detects preceding vehicles and, at speeds up to 37 mph, it also detects pedestrians who are on a potential collision course with the vehicle. (topspeed.com)