**Variable message signs** are a type of **traffic signal**. These signs are placed on roads and have the ability to change the information they display according to traffic conditions. Their main function is to provide information to drivers, warn about possible dangers, and give recommendations and instructions that must be followed. This makes them an essential part of traffic signals, as they help manage vehicle flow and maintain road safety.


Additionally, variable message signs are considered **temporary signals**, along with other signals such as beacons. This means that their information can change and adapt to specific situations, such as roadworks or adverse weather conditions.

Therefore, the correct answer is yes, variable message signs are traffic signals.