While boarding a train or crossing a street, you might have noticed small rounded domes, slightly raised bars firmly placed on the ground. These tiles can be felt by cane or underfoot. They are referred to as tactile ground surface indicators . A very usual type of detectable warning plate use attention patterns that uses rows of rounded narrow bars as indicators. This attention paving conveys a message about the danger or navigation to visually challenged persons. In addition, these detectable warning plates mark the transition when placed at curb ramps or guide the pedestrians to take caution measures before taking stairs. Types of Tactile Ground Surface Indicators Tactile paving indicators indicate warnings and cautions or may mark safe areas. It allows pedestrians with visual impairment to identify their milieu and navigate it unconventionally by offering a palpable way. Attention pattern Attention patterns are a series of rows of truncated domes. There are two types of attenti