What is the purpose of an advisory speed limit sign?

An advisory speed limit sign is designed to suggest a safe speed for drivers under specific road conditions. These signs are often posted in areas where road conditions may change, such as approaching a sharp curve, a merge area, or a construction zone. The advisory speed is not legally enforceable like a regulatory speed limit; instead, it provides guidance to help ensure the safety of drivers, passengers, and pedestrians by recommending a speed that is appropriate for the circumstances.

For instance, if the road becomes narrow or if there are sharp turns, the advisory speed limit helps drivers navigate safely, taking into account factors like visibility, road surface conditions, and traffic patterns. This allows drivers to make better-informed decisions and adjust their speed accordingly to maintain safety while driving.