Department of Transport statistics on traffic in the UK estimate a 1.2% rise in traffic levels across the country between the first quarter of 2005 and the first quarter of 2006.
In National Statistics on Traffic in Great Britain
, the DfT finds that car traffic was virtually unchanged but light van traffic was 8% higher. Goods vehicle traffic rose by 3% but other motor vehicle traffic was virtually unchanged. More traffic was found to be using motorways with a 1%rise and by 2% more vehciles are using rural A roads and minor urban roads. The figures relate to traffic, measured in terms of vehicle kilometres, and sometimes known as the volume of traffic. This is not the same as congestion. For example, traffic levels might show an increase but at the same time congestion levels may decline. This could happen if, for example, there is more traffic overall but it is more evenly spread during the day, with less during peak periods and more at other times.