To ask the Secretary of State for Transport what estimate he has made of the proportion of accidents on trunk roads caused by vehicles travelling between 50 and 60 miles per hour in the last year for which figures are available. (265128)

The Highways Agency uses validated police accident data to inform its analysis and investigation into accidents occurring on the trunk road network. This data tells us that in the three years 2005 to 2007, speed was adjudged to be a contributory factor in 227 out of 1,120 deaths on trunk roads (20 per cent). However, the data does not include details of the travelling speed of vehicles prior to accidents occurring.