We were engaged by HyD for this investigation study on the provision of fall protection measures at designated groups of roofs for existing footbridges, subways, walkway covers, noise barriers and associated structures including lifts and escalators. Designated categories of roofs to determine the necessity of human access to rooftops during inspection and maintenance and designated groups of roofs and their representatives to recommend with the most suitable option of fall protection measures shall also be identified under this Assignment. As such, an expertise input is required in collating information, research and review, conducting investigation and formulating the requirements/typical designs of all the fall protection measures based on both local and overseas experiences.