Driver's License Test Prep
Horizontal 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
R10-14a
Category
regulatory
Color
white
Shape
rectangle horizontal
National · MUTCD Sign Reference

Emergency Signal: Stop On Flashing Red (Horizontal)

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

Horizontal layout of the emergency-signal stop notice, used at fire-station and hospital driveways where a wide overhead or post-mounted format fits better than a vertical sign. Drivers must come to a full stop whenever the associated signal flashes red.

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
Small red rectangular plaque with white border and the words ALL WAY in white letters.
All Way Plaque
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
Source

FHWA SHSM Interim — R10-14a (https://mutcd.fhwa.dot.gov/shsm_interim/zip_files/r10_14a.zip) (Public domain (FHWA))

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