What it means
An additional panel never stands alone. This one tells you how long the stretch covered by the main sign above it is.
What to do
Shows how long a stretch of road the restriction or hazard covers. For example, '15m' means the next 15 metres.
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.
