Are blue signs regulatory signs that must be obeyed?

Blue signs are not regulatory signs; they primarily provide information related to services for motorists, such as rest areas, food, and lodging. Regulatory signs, which often include signs that must be obeyed, are typically red, white, or black and convey information such as speed limits or stop requirements.

The misconception might arise because blue signs are prevalent on highways, but their purpose is to assist and inform drivers rather than issue commands that need to be followed. Thus, it is critical to understand that while blue signs serve an important function in guiding drivers, they do not carry the force of law like traditional regulatory signs do.