Overhead Protection Systems Pedestrian Safety The original use for the gantry system was to provide pedestrian safety while near building sites. It provides protection to pedestrians on footpaths surrounding building sites. The gantry's steel deck and rear wall, protects pedestrians from many dangers associated with building sites. Pedestrian safety was a major issue for the project completed for Bovis Lend Lease at Sydney International Terminal where gantry was installed so access could be maintained in the departures terminal.