In New York, they have reduced the incidences of this sort of criminality through education on how it affects tourism and in turn money for the city and in turn money for amenities and facilities, and of course the use of Graphitti resistant paint
the current trend is using acid etch on the windows, which ufortunately involves replacing windows and not a quick wash down with graphitti Removal chemicals.
as for the hi vis vests, seeing as these people seem to have free run of the depots, picking up a few vests along the way is no probs. Is there no security in these places ?. The indoor scenes look well lit and the outdoor ones in broad daylight , CCTV anyone ?
its kind of worrying when you see gardai, army etc, carrying out rehearsals for terrorist attacks using bombs, etc, when crims have this type of access to our transport infrastructure, who needs bombs !!!