What it means
An additional panel never stands alone. It changes or explains the main sign above it, and this one tells you which way the main sign applies.
What to do
A small panel under a main sign that makes the direction clear, such as an arrow left or right. Go the way it shows.
How to read additional panels
Additional panels are small rectangles fixed under a main sign. They add detail such as a distance, a direction or a time, and they never apply on their own.
More additional panels
On the way to your test? Read how the NTSA test works and how the Model Town Board is used.
