Airbus FCOM says: When crossing a runway: Strobe sw.... ON and Runway turn off lights..... ON. Period. No TCAS, it's forbidden due to potential interference and no other lights. I don't understand why some airlines like to supersede Airbus SOP. If you don't see an aircraft with his strobe ON, something is terribly wrong. By the way the wing light is annoying for other traffic taxiing nearby. xD