Keeping guard

摘要

In urban areas, guardrailing is typically used along the kerb-line of high-density shopping streets; at the entrances and/or exits to transport interchanges; at road intersections; pedestrian crossings; school entrances and exits; central reservations and on pedestrian refuge islands. Guardrailing has also been introduced at a number of sites as a way of keeping vehicles off the footway and to discourage parking where there was evidence of pedestrians being masked by parked cars.