Barricade tape is the tool you need to rope-mark off dangerous spaces or hazardous areas. Rolls of it carefully arranged can reduce liability, especially in areas with low visibility or slippery floors. It has multiple monikers and synonyms: barrier, construction, caution, warning, danger, hazard, or police tape. They all serve the same purpose: to warn people about entering an area with potential danger. The places in question vary, from construction sites to crime scenes or highway sections with massive car crashes.