**Variable message signs** are devices placed on roads that have the ability to change the information they display according to traffic circumstances. Their main objective is to **regulate traffic** by providing relevant information to drivers. This includes warnings about possible hazards and recommendations or instructions that should be followed to ensure a safe and efficient traffic flow.


These signs are an essential part of **temporary signals**, which also include other devices such as beaconing signs. Unlike permanent signs, variable message signs adapt to changing traffic conditions, making them especially useful for managing dynamic situations on the road.