These are applied where the presence of pedestrians or pedestrians with a special characteristic (e.g., school children) may share a road space in a largely unsupervised manner. Treatments include pedestrian warning signs, shared zones, school zones, local area traffic management schemes, and lighting.

ability of a ship's structure to exclude water in the face of extremely adverse weather, including actual immersion

describing a product that has been tested and determined to be safe for use on surfaces which come in contact with food or drink

short horizontal members sometimes nailed between studs, usually about halfway up a wall