Variable-message sign

A variable-message sign is a big sign that can change what it says. Imagine it's like a big coloring book page that has a special pen that can change what picture appears.

Sometimes a variable-message sign is used to show important information, like if there's been an accident on the road or if there's going to be a big festival in town. Other times, it might tell you how fast you're going or if you need to slow down because there's a curve in the road ahead.

Basically, it's like a big sign that can show different things depending on what's needed to keep people safe or informed.