The National Traffic Information Service collects, processes and disseminates real-time traffic data and information relating to the 4 300 miles of strategic road network for which Highways England is responsible. The National Traffic Information Service provides information 24 hours per day, 7 days per week, 365 days a year to help Highways England’s customers plan their journeys and avoid delays, and to help our operations teams understand and mitigate the impacts of planned and unplanned traffic events on the strategic road network. Historic data recorded by the National Traffic Information Service is used to help plan and evaluate development of the strategic road network.