A runoff water vault may be divided into an input chamber which receives runoff water and a second chamber which also separates and stores buoyant and non-buoyant materials separated from the runoff water stream. Each of the blades has a substantially linear blade edge, each blade edge lying within a blade-edge plane that is substantially perpendicular to the blades. In the process of compressing the data, the following three steps are repetitively carried out. In turn, the intermediation system applies the variant intermediation logic in response to the HTTP message andor in response to subsequent HTTP messages. A rotation mechanism allows the U-shaped frame to rotate 180\xb0 allowing patients to reverse their direction of travel along the given path. The driving support controller sets an enforcement notification state when the driving direction determination unit determines the possibility after the driving support controller starts to execute the driving support control.