POLICE say they will be patrolling around the Storey Arms area with snowfall expected to attract large numbers of people to the Brecon Beacons.
Walkers have also been asked to consider alternative routes up to the top of Pen y Fan to avoid congestion on the A470 - the main route between Brecon and Merthyr Tydfil.
On one weekend last January, following snowfall, police issued more than 100 parking tickets to drivers who’d illegally parked on the A470 near Storey Arms, the most popular route for accessing the highest peak in southern Britain.
Cars parked on the side of the road caused substantial difficulty to emergency services vehicles which were called to a three-vehicle road traffic collision, and created a hazard to pedestrians who had to walk in the road.
Sergeant Owen Dillon, of the Brecon Roads Policing Unit, said: "This weekend there will be a police presence around the Storey Arms area as we endeavour to ensure people are parking responsibly, and we will be taking action against those breaching the clearway.
"We are also encouraging people to look at alternative routes up Penyfan to avoid congestion around the A470 and asking them consider if the journey is really necessary or safe.
"The area is a national park and much of the Storey Arms section of the A470 is a clearway which means that roadside parking is not permitted.
"Past parking issues we’ve experienced in the area created associated risks for pedestrians moving to and from their vehicles, in addition to potential conservation issues caused by damage to roadside verges.
"Last January we issued fines to over 100 vehicles parked illegally in one weekend. We really hope not to do the same this year."