Speed limit signs are important traffic signs that indicate the maximum speed at which vehicles are allowed to travel on a particular road. These signs help ensure safety by reducing the risk of accidents caused by speeding. The limits can vary based on the type of road, location, and surrounding environment. Typically, speed limit signs display a number, such as 25 or 55, which represents the speed in miles per hour (mph) or kilometers per hour (km/h). Drivers are expected to obey these limits, and law enforcement may issue fines for violations.