On a road near our house there appeared some months ago a mysterious road sign.
When I say sign its more a small box at the top of a pole. Its on a pole about standard height for one which would carry a normal Highway Code type metal sign but secured to the upper part is a smallish grey box about 18" high, 6" across and 8" deep. The front is black with the word 'TAG' spelt vertically in LEDS. It is never lit (at least I havent seen it) and doesnt seem to do anything.