South Wales Police is urging members of the public to consider whether their journey is absolutely necessary before leaving home this morning.
Overnight snow fall has left many areas of the force impassable and officers are urging travellers to be extremely cautious when making their journey.
The Traffic Wales website has been updated with all road closure and transport link information and officers are urging everyone to check the details of their journey before leaving home this morning including public transport via bus and rail.
Where travel is absolutely necessary, drivers should make use of main roads and avoid less used routes, allow extra time for their journey and ensure they allow an appropriate distance between them and the vehicle ahead.