The inlet location may be dictated either by roadway elements, hydraulic requirements, or both. Inlets should be placed upstream of roadway elements such as sags, street intersections, gore islands (see Figure 10-9), super elevation transitions, driveways, cross-walks, and curb ramps (see ). Flow across intersections, ramps, and to a lesser extent, driveways, may cause a traffic hazard, while flow across cross-walks and curb ramps may cause a pedestrian hazard. Inlets at these locations should be designed to capture 100% of the flow. Inlets should also be located hydraulically to prevent excessive gutter flow and excessive ponding.