Editing Traffic warning sign (section)

=== Traffic signals ===
[[File:Vienna Convention road sign Aa-17a-V1.svg|thumb|120px|left|Vienna Convention traffic signal ahead (white triangle)]]

These warning signs indicate that [[Traffic signal|traffic lights]] are ahead, and are often used when it is difficult to see that a traffic light may already be showing red, to warn a driver to prepare to slow down. They may be supplemented with flashing light or lighted sign when light is red or turning red. Some countries also have signs warning of signals for [[ramp meter]]s, fire stations, and airfields.