It's important to understand which type of tactile is required to meet Australian standards. Chelmstone stock both warning (or sometimes referred to as cautional) ceramic tactiles, along with directional tactiles. Cautional or Warning tactiles (TGSIs) indicate to those with a visual impairements of an approaching hazard. Directional tactiles (TGSIs) give people with visual impairments directional orientation in open spaces where there are insufficient cues such as handrails or walls.