There are many different designs and layouts for speed restriction signs, such as warning, caution, and danger signs. Danger signs are used to warn people about potential imminent threats, such as high voltage locations or hazardous items, that could result in significant injury or death. Warning signs are intended to draw attention to possible injury-causing dangers, such as things that could fall or slick floors. Caution signs are intended to draw attention to possible dangers, such as uneven surfaces or low ceilings, that could result in minor injuries. The speed limit sign is another kind of safety indicator that directs traffic towards safe behaviour. These warnings may include reminders to wear personal protective equipment (PPE) or adhere to particular safety procedures, as well as advice on how to operate machinery or equipment properly. Another tool for ensuring adherence to safety rules is the speed restriction sign. For instance, most public buildings and workplaces are required by law to include fire safety signage. These signs show where fire extinguishers, fire escapes, and other fire safety supplies are located.