Trains and bus operators are meeting with businesses from the New Forest and South Downs National Park to find out how they can persuade more visitors to leave their cars at home.
With fifty three million visits to the two national parks every year, they want more people to try greener forms of transport.
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Holly has the latest forecast for the east of the region.
The forecast for the west of the region from Holly.
Holly has the latest forecast for the west of the ITV Meridian region.