Freezing Conds

Beware, freezing conds could damage your building.

I was a bit baffled by the wording on the high level motorway warning signs today on the M90. "DRIVE WITH CARE FREEZING CONDS" they said. Not really a clear message and you cant help but wonder what a dyslexic, elderly or non-English speaking driver might make of this ill thought through message. Could it be referring to:

FREEZING CONDOMS - not a pleasant thought (but some fetishists may disagree).
FREEZING CONDOMINIUMS - over enthusiastic or badly adjusted air conditioning.
FREEZING CONDUCTORS - if at some chilly orchestral concert.
FREEZING CONDORS - birds of prey descending on the road from a high altitude.
FREEZING CONTENDERS - winter Tough Mudder venue up ahead?

On balance somebody probably meant "freezing conditions" but what could that possibly mean around here?