Samenvatting
These investigations evaluated the current effectiveness of: (a) centre-suspended and advance warning flashing beacons in reducing accidents, (b) safety lighting installations in reducing night accidents. (c) various delineation devices, and (d) protective guardrail in reducing reported accidents. A before and after study method was used to evaluate 45 flashing beacons, 41 safety lighting projects, 32 delineation locations, and 14 guardrail locations.