ICC Permit Technician Practice Exam

What type of sign responds to naturally occurring external motion?

1. Static sign

2. Illuminated sign

3. Environmentally activated sign

4. Electronic sign

The correct answer is: Environmentally activated sign

The term “environmentally activated sign” refers to signage that reacts to or is triggered by natural phenomena or movements in its surroundings. This type of sign typically employs sensors or technology that allow it to respond to changes in the environment, such as wind, temperature, or the movement of people or vehicles nearby. For instance, such a sign may illuminate or change its display when it detects motion, making it relevant and dynamic based on the activity occurring around it. In this context, an environmentally activated sign stands out because it relies specifically on external motions and environmental changes to operate, differentiating it from static signs, which remain unchanged regardless of surroundings, illuminated signs, which may primarily serve to increase visibility without interaction, and electronic signs, which often use programmed displays but don’t necessarily respond to the environment in a dynamic way. Thus, the nature and functionality of an environmentally activated sign make it the most fitting answer to the question regarding responsiveness to naturally occurring external motion.