Road Traffic: Accidents Mr. Greg Knight To ask the Secretary of State for Transport if he will commission and subsequently publish research on the relationship between vehicle flows and accident rates; and if he will make a statement. Dr. Ladyman The Department has commissioned research into the link between congestion and accident risk. The results have been published in Road Safety Research Report N44, published by DfT and available on our website. Copies are already available in the Libraries of the House.