joeyd:
10 or so years ago I used to do subbie work for TNT, we had Laminated sheets in the cab to hold up to the window if we ever got pulled by Vosa stating that we would follow them to a police station and stop there but that we would have to refuse a roadside check. I think there was a spate of robberies at the time involving fake coppers/vosa.Never got pulled so didn’t got the chance to see how a genuine Vosa would have reacted to the sign.
I have got one of those on my bag issued by the mail company i do a few shifts for - never had the chance to try it out either