Get the traffic moving - invest in a road How to get the traffic on Britain's roads moving and to keep it flowing has been a constant sore for drivers and successive governments. Now David Cameron believes getting private investment is one option. The prime minister said it was clear there was not enough capacity on the roads in busy areas and claimed congestion costs the UK economy around 10 billion euros a year. I think we need to look at innovative approaches to the funding of our national roads to increase investment to reduce congestion. Road tolling is one option but we are only considering this for new, not existing capacity. "Let me be clear this is not about mass tolling and as I have said we are not tolling existing roads it is about getting more out of the money that motorists already pay," he said. Motorways could be sold to private companies on long leases. Britain has one toll road which skirts round the city of Birmingham. The PM has promised to move from a, "piecemeal" approach to a strategic one. Before any action there will be a feasibility study to look at "new ownership and financing models" which is to be completed in the autumn. More about: Public transport, Road transport, United Kingdom