Although the decline in railway use led to a reduction in the length of the rail network, the length of the road network has not increased in proportion to the increase in road use. Whereas the rail network has halved from in 1950 to today, the major road network only increased from in 1951 to in 1990, and reduced slightly to by 2010. In 2008, the Department for Transport stated that traffic congestion is one of the most serious transport problems facing the United Kingdom. According to the government-sponsored Eddington report of 2006, bottleneck roads are in serious danger of becoming so congested that it may damage the economy.