Can anyone confirm that such a sign really exists?

The sign is the result, it is said, of the Highway Dept.
sending the English text for a road sign
to a Welsh translator,
and receiving an e-mail reply,
which the Highway people hastily had
made into a bi-lingual English-Welsh sign.


English:
No entry for heavy goods vehicles.
Residential site only.

underneath:
Nid wyf yn y swyddfa ar hyn o bryd.
Anfonwch unrhyw waith i'w gyfieithu.