Managing safety of roads through their whole life

Safety management principles should start when a road is initially planned, be carried through the design and construction phases, and continue to be applied through the life of the road. During its life a road may undergo many changes in the level of traffic flow it is serving, development of the area it passes through, and development of adjoining road networks. Regular appraisal is therefore needed of the road function and the appropriateness of its design to cater safely for this function.