Tactile paving is designed to alert visually impaired people to changes in their surroundings and potential hazards. It helps distinguish where the footway ends and the carriageway begins, particularly in areas where the kerb upstand is less than 25mm and difficult to detect. This type of tactile is widely used at pedestrian crossings in both urban and residential settings. It also serves as a warning for specific dangers such as steps, level crossings, or the approach to on-street light rapid transit platforms. Corduroy hazard warning units are most commonly installed at the top and bottom of steps and are typically laid in a buff yellow colour for clear visibility.