Bollards are a common design of Vehicle Security Barrier (VSB) that are required in certain locations to mitigate criminal or terrorist vehicle-borne threats. Bollard type VSBs provide a solution that resolves many common operational issues faced at busy transport interchanges. Further examples of VSBs can be found in Traffic Advisory Leaflet (TAL) 1/11 'Vehicle Security Barriers within the Streetscape'. Observational surveys and research studies have been carried out under normal travel conditions to assess whether permanent bollards schemes affect pedestrian movement or give rise to additional health and safety concerns. Studies of evacuation scenarios have not been carried out. This TAL outlines the findings of these studies and provides guidance to inform the planning and design of bollard schemes installed for the purpose of hostile vehicle mitigation. (Author/publisher)
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