London Congestion Trends, an in-depth study of the causes of traffic congestion in London between 2012 and 2015 published by Inrix, indicates that congestion in London is increasing, with journey times in Central London growing by 12 per cent annually. Inrix says this is consistent with data that shows that the London economy and population are growing, which normally results in an increase in gridlock. Further, unemployment and fuel prices are down, both of which usually mean a rise in traffic. Despite thi