There are three key objectives for roadway and roadside design that can be addressed to reduce the number of run-off-road collisions. The first objective of roadway design is to keep the vehicle in the travel lane. The second engineering objective is to assist drivers that encroach onto the roadside to regain control of the vehicle, and return safely to the correct travel lane without hitting a roadside object or feature, or overturning. The third engineering objective is to reduce the severity of run-offroad collisions if the first two objectives were not met. In deciding which treatment(s) to implement, the expected safety benefit can be estimated using Accident Modification Factors (AMFs). This paper expands on the objectives to manage run-off-road collisions, and focuses on six engineering treatments that can be implemented to reduce the frequency and severity of run-offroad collisions. For the covering abstract of the conference see ITRD number E211521.
Samenvatting