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Vertical white rectangle with a black border, divided into two panels: top reads EMERGENCY SIGNAL, bottom reads STOP ON FLASHING RED, all in black text.
MUTCD
R10-14
Category
regulatory
Color
white
Shape
rectangle vertical

Emergency Signal: Stop On Flashing Red

At this emergency-vehicle signal, stop when the red light flashes.

Posted at intersections equipped with an emergency-vehicle traffic light (typically at fire stations or hospitals) to instruct drivers to come to a complete stop whenever the signal displays a flashing red indication so emergency apparatus can enter or cross the roadway.

In the same family

Related signs

Red octagon with white border and the word STOP in large white letters across the center.
Stop
Downward-pointing red triangle with a white interior triangle and the word YIELD in red letters.
Yield
Red circle on a square white background with the words DO NOT ENTER in white above and below a wide white horizontal bar.
Do Not Enter
Horizontal red rectangle with the words WRONG WAY stacked in large white letters.
Wrong Way
Tall yellow vertical panel reading STATE LAW at the top, a yield triangle above a walking figure in a white inset, and IN CROSSWALK at the bottom in black letters.
State Law Yield To Pedestrian In Crosswalk (In-Street)
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