That's what I mean. Change the lights minute by minute. There have been incidents where one plane is cleared to cross while another is landing on final approac

That's what I mean. Change the lights minute by minute. There have been incidents where one plane is cleared to cross while another is landing on final approach. There's no fault on the pilots I think. With the right signaling on the runways all pilots involved could double check the clearances and one of them can speak up if things are weird.