It is for all the chinese students in York, they don't even look, they just walk straight out into traffic with their faces buried in their phones! Even a blast on the horn doesn't get any reaction whatsoever out of them!
Not just in York, but in many University and Tourist cities & towns.
Stratford upon Avon is only 7 miles from where I live. When they're not wearing Smog Masks (Jeez, it ain't polluted Beijing), they're buried in their phones on an almost suicidal quest to cross streets, Lemming style!