Strobe lights ON is very important, when on, or crossing, active runways.
Especially after the accident at LAX...which was very bad, IE: 737 (I think) 'landing' atop a Metro.
In that particular case the female (fully malcontent) tower controller was dismissed, forthwith.
Should have been 'dismissed' (the old fashioned way) at sunrise, IMO.
After this accident, the FAA cracked down...hard.
Light 'em up, folks.